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23 <h1 class="settitle">XBoard</h1>
27 Next: <a rel="next" accesskey="n" href="#Major-modes">Major modes</a>,
28 Up: <a rel="up" accesskey="u" href="#dir">(dir)</a>
32 <h2 class="unnumbered">Introduction</h2>
34 <p><a name="index-introduction-1"></a>
36 <p>XBoard is a graphical chessboard that can serve as a
37 user interface to chess engines (such as GNU Chess), the
38 Internet Chess Servers,
39 electronic mail correspondence chess, or your own collection of saved games.
41 <p>This manual documents version 4.6.0 of XBoard.
44 <li><a accesskey="1" href="#Major-modes">Major modes</a>: The main things XBoard can do.
45 <li><a accesskey="2" href="#Basic-operation">Basic operation</a>: Mouse and keyboard functions.
46 <li><a accesskey="3" href="#Menus">Menus</a>: Menus, buttons, and keys.
47 <li><a accesskey="4" href="#Options">Options</a>: Command options supported by XBoard.
48 <li><a accesskey="5" href="#Chess-Servers">Chess Servers</a>: Using XBoard with an Internet Chess Server (ICS).
49 <li><a accesskey="6" href="#Firewalls">Firewalls</a>: Connecting to a chess server through a firewall.
50 <li><a accesskey="7" href="#Environment">Environment</a>: Environment variables.
51 <li><a accesskey="8" href="#Limitations">Limitations</a>: Known limitations and/or bugs.
52 <li><a accesskey="9" href="#Problems">Problems</a>: How and where to report any problems you run into.
53 <li><a href="#Contributors">Contributors</a>: People who have helped developing XBoard.
54 <li><a href="#CMail">CMail</a>: Using XBoard for electronic correspondence chess.
55 <li><a href="#Other-programs">Other programs</a>: Other programs you can use with XBoard.
57 <li><a href="#Copyright">Copyright</a>: Copyright notice for this manual.
58 <li><a href="#Copying">Copying</a>: The GNU General Public License.
60 <li><a href="#Index">Index</a>: Index of concepts and symbol names.
64 <a name="Major-modes"></a>
66 Next: <a rel="next" accesskey="n" href="#Basic-operation">Basic operation</a>,
67 Previous: <a rel="previous" accesskey="p" href="#Top">Top</a>,
68 Up: <a rel="up" accesskey="u" href="#Top">Top</a>
72 <h2 class="chapter">1 Major modes</h2>
74 <p><a name="index-Major-modes-2"></a>
75 XBoard always runs in one of four major modes. You select the
76 major mode from the command line when you start up XBoard.
79 <dt>xboard [options]<dd>As an interface to GNU Chess or another chess engine running on your
80 machine, XBoard lets you play a game against the machine,
81 set up arbitrary positions, force variations, watch a game between two
82 chess engines, interactively analyze your stored games or set up and
83 analyze arbitrary positions. (Note: Not all chess engines support
85 <br><dt>xboard -ics -icshost hostname [options]<dd>As Internet Chess Server (ICS) interface, XBoard
86 lets you play against other ICS users, observe games
87 they are playing, or review games that have recently finished. Most
88 of the ICS "wild" chess variants are supported, including bughouse.
89 <br><dt>xboard -ncp [options]<dd>XBoard can also be used simply
90 as an electronic chessboard to play through games. It will read and
91 write game files and allow you to play through variations
92 manually. You can use it to browse games off the net or review games
93 you have saved. These features are also available in the other modes.
94 <br><dt>|pxboard<dd>If you want to pipe games into XBoard, use the supplied shell
95 script <samp><span class="file">pxboard</span></samp>. For example, from the news reader <samp><span class="file">xrn</span></samp>,
96 find a message with one or more games in it, click the Save button,
97 and type ‘<samp><span class="samp">|pxboard</span></samp>’ as the file name.
98 <br><dt>cmail [options]<dd>As an interface to electronic mail correspondence chess, XBoard
99 works with the cmail program. See <a href="#CMail">CMail</a> below for
104 <a name="Basic-operation"></a>
106 Next: <a rel="next" accesskey="n" href="#Menus">Menus</a>,
107 Previous: <a rel="previous" accesskey="p" href="#Major-modes">Major modes</a>,
108 Up: <a rel="up" accesskey="u" href="#Top">Top</a>
112 <h2 class="chapter">2 Basic operation</h2>
114 <p><a name="index-Basic-operation-3"></a>
115 To move a piece, you can drag it with the left mouse button, or you
116 can click the left mouse button once on the piece, then once more on
117 the destination square. In crazyhouse, bughouse or shogi you can
118 drag and drop pieces to the board from the holdings squares
119 displayed next to the board.
121 <p>Old behavior, where right-clicking a square brings up a menu
122 where you can select what piece to drop on it can still be
123 selected through the ‘<samp><span class="samp">Drop Menu</span></samp>’ option.
124 Only in Edit Position mode right and middle clicking a square is still used to
125 put a piece on it, and the piece to drop is selected by sweeping
126 the mouse vertically with the button held down.
128 <p>The default function of the right mouse button in other modes is
129 to display the position the chess program thinks it will end up in.
130 While moving the mouse vertically with this button pressed
131 XBoard will step through the principal variation to show how
132 this position will be reached.
133 Lines of play displayed in the engine-output window,
134 or PGN variations in the comment window can similarly
135 be played out on the board, by right-clicking on them.
136 Only in Analysis mode, when you walk along a PV,
137 releasing the mouse button will forward the game upto that point,
138 like you entered all previous PV moves.
139 As the display of the PV in that case starts after the first move
140 a simple right-click will play the move the engine indicates.
142 <p>When connected to an ICS, it is possible to call up a graphical
143 representation of players seeking a game in stead of the chess board,
144 when the latter is not in use
145 (i.e. when you are not playing or observing).
146 Left-clicking the display area will switch between this 'seek graph'
148 Hovering the mouse pointer over a dot will show the details of the
149 seek ad in the message field above the board.
150 Left-clicking the dot will challenge that player.
151 Right-clicking a dot will 'push it to the back',
152 to reveal any dots that were hidden behind it.
153 Right-clicking off dots will refresh the graph.
155 <p>Most other XBoard commands are available from the menu bar. The most
156 frequently used commands also have shortcut keys or on-screen buttons.
157 These shortcut keystrokes are mostly non-printable characters.
158 Typing a letter or digit while the board window has focus
159 will bring up a type-in box with the typed letter already in it.
160 You can use that to type a move in siuations where it is your
161 turn to enter a move,
162 type a move number to call up the position after that move
164 or, in Edit Position mode, type a FEN.
165 Some rarely used parameters can only be set through options on the
166 command line used to invoke XBoard.
168 <p>XBoard uses a settings file, in which it can remember any changes to
169 the settings that are made through menus or command-line options,
170 so they will still apply when you restart XBoard for another session.
171 The settings can be saved into this file automatically when XBoard exits,
172 or on explicit request of the user.
173 The default name for the settings file is /etc/xboard/xboard.conf,
174 but in a standard install this file is only used as a master settings
175 file that determines the system-wide default settings,
176 and defers reading and writing of user settings to a user-specific
177 file like ~/.xboardrc in the user's home directory.
179 <p>When XBoard is iconized, its graphical icon is a white knight if
180 it is White's turn to move, a black knight if it is Black's turn.
185 Next: <a rel="next" accesskey="n" href="#Options">Options</a>,
186 Previous: <a rel="previous" accesskey="p" href="#Basic-operation">Basic operation</a>,
187 Up: <a rel="up" accesskey="u" href="#Top">Top</a>
191 <h2 class="chapter">3 Menus, buttons, and keys</h2>
193 <p><a name="index-Menus-4"></a>
196 <li><a accesskey="1" href="#File-Menu">File Menu</a>: Accessing external games and positions.
197 <li><a accesskey="2" href="#Edit-Menu">Edit Menu</a>: Altering games, positions, PGN tags or comments.
198 <li><a accesskey="3" href="#View-Menu">View Menu</a>: Controlling XBoard's shape and looks.
199 <li><a accesskey="4" href="#Mode-Menu">Mode Menu</a>: Selecting XBoard's mode.
200 <li><a accesskey="5" href="#Action-Menu">Action Menu</a>: Talking to the chess engine or ICS opponents.
201 <li><a accesskey="6" href="#Engine-Menu">Engine Menu</a>: Controlling settings and actions of the engine(s).
202 <li><a accesskey="7" href="#Options-Menu">Options Menu</a>: User preferences.
203 <li><a accesskey="8" href="#Help-Menu">Help Menu</a>: Getting help.
204 <li><a accesskey="9" href="#Keys">Keys</a>: Other shortcut keys.
208 <a name="File-Menu"></a>
210 Next: <a rel="next" accesskey="n" href="#Edit-Menu">Edit Menu</a>,
211 Up: <a rel="up" accesskey="u" href="#Menus">Menus</a>
215 <h3 class="section">3.1 File Menu</h3>
217 <p><a name="index-File-Menu-5"></a><a name="index-Menu_002c-File-6"></a>
219 <dt>New Game<dd><a name="index-New-Game_002c-Menu-Item-7"></a>Resets XBoard and the chess engine to the beginning of a new chess
220 game. The <kbd>Ctrl-N</kbd> key is a keyboard equivalent. In Internet Chess
221 Server mode, clears the current state of XBoard, then
222 resynchronizes with the ICS by sending a refresh command. If you want to
223 stop playing, observing, or examining an ICS game, use an
224 appropriate command from the Action menu, not ‘<samp><span class="samp">New Game</span></samp>’.
225 See <a href="#Action-Menu">Action Menu</a>.
226 <br><dt>New Shuffle Game<dd><a name="index-New-Shuffle-Game_002c-Menu-Item-8"></a>Similar to ‘<samp><span class="samp">New Game</span></samp>’, but allows you to specify a particular initial position
227 (according to a standardized numbering system)
228 in chess variants which use randomized opening positions (e.g. Chess960).
229 You can also press the ‘<samp><span class="samp">Pick Fixed</span></samp>’ button to let XBoard generate
230 a random number for you.
231 The thus selected opening position will then persistently be chosen on any following
232 New Game command until you use this menu to select another.
233 Selecting position number -1 (or pushing the ‘<samp><span class="samp">Randomize</span></samp>’ button)
234 will produce a newly randomized position on any new game.
235 Using this menu item in variants that normally do not shuffle their opening position
236 does cause these variants to become shuffle variants until you use the
237 ‘<samp><span class="samp">New Shuffle Game</span></samp>’ menu to explicitly switch the randomization off,
238 or select a new variant.
239 <br><dt>New Variant<dd><a name="index-New-variant_002c-Menu-Item-9"></a>Allows you to select a new chess variant in non-ICS mode.
240 (In ICS play, the ICS is responsible for deciding which variant will be played,
241 and XBoard adapts automatically.) The shifted <kbd>Alt+V</kbd> key is a
242 keyboard equivalent. If you play with an engine, the engine must
243 be able to play the selected variant, or the command will be ignored.
244 XBoard supports all major variants, such as xiangqi, shogi, chess, chess960,
245 Capablanca Chess, shatranj, crazyhouse, bughouse.
246 But not every board size has built-in bitmaps for un-orthodox pieces!
247 Only sizes bulky (72) and middling (49) have all pieces,
248 while size petite (33) has most.
249 These sizes would have to be set at startup through the <code>size</code>
250 command-line option when you start up XBoard for such variants to be playable.
252 <p>You can overrule the default board format of the selected variant,
253 (e.g. to play suicide chess on a 6 x 6 board),
254 in this dialog, but normally you would not do that,
255 and leave them at '-1', which means 'default'.
256 <br><dt>Load Game<dd><a name="index-Load-Game_002c-Menu-Item-10"></a>Plays a game from a record file. The <kbd>Ctrl-O</kbd> key is a keyboard equivalent.
257 A pop-up dialog prompts you for the file name. If the file contains more
258 than one game, a second pop-up dialog
259 displays a list of games (with information drawn from their PGN tags, if
260 any), and you can select the one you want. Alternatively, you can load the
261 Nth game in the file directly, by typing the number <kbd>N</kbd> after the
262 file name, separated by a space.
264 <p>The game file parser will accept PGN (portable game notation),
265 or in fact almost any file that contains moves in algebraic
267 Notation of the form ‘<samp><span class="samp">P@f7</span></samp>’
268 is accepted for piece-drops in bughouse games;
269 this is a nonstandard extension to PGN.
270 If the file includes a PGN position (FEN tag), or an old-style
271 XBoard position diagram bracketed by ‘<samp><span class="samp">[--</span></samp>’ and ‘<samp><span class="samp">--]</span></samp>’
272 before the first move, the game starts from that position. Text
273 enclosed in parentheses, square brackets, or curly braces is assumed to
274 be commentary and is displayed in a pop-up window. Any other
275 text in the file is ignored. PGN variations (enclosed in
276 parentheses) also are treated as comments;
277 however, if you rights-click them in the comment window,
278 XBoard will shelve the current line, and load the the selected variation,
279 so you can step through it.
280 You can later revert to the previous line with the ‘<samp><span class="samp">Revert</span></samp>’ command.
281 This way you can walk quite complex varation trees with XBoard.
282 The nonstandard PGN tag [Variant "varname"] functions similarly to
283 the -variant command-line option (see below), allowing games in certain chess
284 variants to be loaded.
285 Note that it must appear before any FEN tag for XBoard to recognize
286 variant FENs appropriately.
287 There is also a heuristic to
288 recognize chess variants from the Event tag, by looking for the strings
289 that the Internet Chess Servers put there when saving variant ("wild") games.
290 <br><dt>Load Position<dd><a name="index-Load-Position_002c-Menu-Item-11"></a>Sets up a position from a position file. A pop-up dialog prompts
291 you for the file name. The shifted <kbd>Ctrl-O</kbd> key is a keyboard
292 equivalent. If the file contains more than one saved
293 position, and you want to load the Nth one, type the number N
294 after the file name, separated by a space. Position files must
295 be in FEN (Forsythe-Edwards notation), or in the format that the
296 Save Position command writes when oldSaveStyle is turned on.
297 <br><dt>Load Next Position<dd><a name="index-Load-Next-Position_002c-Menu-Item-12"></a>Loads the next position from the last position file you loaded.
298 The shifted <kbd>PgDn</kbd> key is a keyboard equivalent.
299 <br><dt>Load Previous Position<dd><a name="index-Load-Previous-Position_002c-Menu-Item-13"></a>Loads the previous position from the last position file you
300 loaded. The shifted <kbd>PgUp</kbd> key is a keyboard equivalent.
301 Not available if the last position was loaded from a pipe.
302 <br><dt>Save Game<dd><a name="index-Save-Game_002c-Menu-Item-14"></a>Appends a record of the current game to a file.
303 The <kbd>Ctrl-S</kbd> key is a keyboard equivalent.
305 prompts you for the file name. If the game did not begin with
306 the standard starting position, the game file includes the
307 starting position used. Games are saved in the PGN (portable
308 game notation) format, unless the oldSaveStyle option is true,
309 in which case they are saved in an older format that is specific
310 to XBoard. Both formats are human-readable, and both can be
311 read back by the ‘<samp><span class="samp">Load Game</span></samp>’ command.
312 Notation of the form ‘<samp><span class="samp">P@f7</span></samp>’
313 is accepted for piece-drops in bughouse games;
314 this is a nonstandard extension to PGN.
315 <br><dt>Save Position<dd><a name="index-Save-Position_002c-Menu-Item-15"></a>Appends a diagram of the current position to a file.
316 The shifted <kbd>Ctrl+S</kbd> key is a keyboard equivalent.
317 A pop-up dialog prompts you for the file name. Positions are saved in
318 FEN (Forsythe-Edwards notation) format unless the <code>oldSaveStyle</code>
319 option is true, in which case they are saved in an older,
320 human-readable format that is specific to XBoard. Both formats
321 can be read back by the ‘<samp><span class="samp">Load Position</span></samp>’ command.
322 <br><dt>Mail Move<dt>Reload CMail Message<dd><a name="index-Mail-Move_002c-Menu-Item-16"></a><a name="index-Reload-CMail-Message_002c-Menu-Item-17"></a>See <a href="#CMail">CMail</a>.
323 <br><dt>Exit<dd><a name="index-Exit_002c-Menu-Item-18"></a>Exits from XBoard. The <kbd>Ctrl-Q</kbd> key is a keyboard equivalent.
327 <a name="Edit-Menu"></a>
329 Next: <a rel="next" accesskey="n" href="#View-Menu">View Menu</a>,
330 Previous: <a rel="previous" accesskey="p" href="#File-Menu">File Menu</a>,
331 Up: <a rel="up" accesskey="u" href="#Menus">Menus</a>
335 <h3 class="section">3.2 Edit Menu</h3>
337 <p><a name="index-Menu_002c-Edit-19"></a><a name="index-Edit-Menu-20"></a>
339 <dt>Copy Game<dd><a name="index-Copy-Game_002c-Menu-Item-21"></a>Copies a record of the current game to an internal clipboard in PGN
340 format and sets the X selection to the game text. The <kbd>Ctrl-C</kbd>
341 key is a keyboard equivalent. The game can be
342 pasted to another application (such as a text editor or another copy
343 of XBoard) using that application's paste command. In many X
344 applications, such as xterm and emacs, the middle mouse button can be
345 used for pasting; in XBoard, you must use the Paste Game command.
346 <br><dt>Copy Position<dd><a name="index-Copy-Position_002c-Menu-Item-22"></a>Copies the current position to an internal clipboard in FEN format and
347 sets the X selection to the position text. The shifted <kbd>Ctrl-C</kbd> key
348 is a keyboard equivalent. The position can be pasted
349 to another application (such as a text editor or another copy of
350 XBoard) using that application's paste command. In many X
351 applications, such as xterm and emacs, the middle mouse button can be
352 used for pasting; in XBoard, you must use the Paste Position command.
353 <br><dt>Copy Game List<dd><a name="index-Copy-Game-List_002c-Menu-Item-23"></a>Copies the current game list to the clipboard,
354 and sets the X selection to this text.
355 A format of comma-separated double-quoted strings is used,
357 so it can be easily imported into spread-sheet programs.
358 <br><dt>Paste Game<dd><a name="index-Paste-Game_002c-Menu-Item-24"></a>Interprets the current X selection as a game record and loads it, as
359 with Load Game. The <kbd>Ctrl-V</kbd> key is a keyboard equivalent.
360 <br><dt>Paste Position<dd><a name="index-Paste-Position_002c-Menu-Item-25"></a>Interprets the current X selection as a FEN position and loads it, as
361 with Load Position. The shifted <kbd>Ctrl-V</kbd> key is a keyboard equivalent.
362 <br><dt>Edit Game<dd><a name="index-Edit-Game_002c-Menu-Item-26"></a>Allows you to make moves for both Black and White, and to change
363 moves after backing up with the ‘<samp><span class="samp">Backward</span></samp>’ command. The clocks do
364 not run. The <kbd>Ctrl-E</kbd> key is a keyboard equivalent.
366 <p>In chess engine mode, the chess engine continues to check moves for legality
367 but does not participate in the game. You can bring the chess engine
368 into the game by selecting ‘<samp><span class="samp">Machine White</span></samp>’, ‘<samp><span class="samp">Machine Black</span></samp>’,
369 or ‘<samp><span class="samp">Two Machines</span></samp>’.
371 <p>In ICS mode, the moves are not sent to the ICS: ‘<samp><span class="samp">Edit Game</span></samp>’ takes
372 XBoard out of ICS Client mode and lets you edit games locally.
373 If you want to edit games on ICS in a way that other ICS users
374 can see, use the ICS <kbd>examine</kbd> command or start an ICS match
376 <br><dt>Edit Position<dd><a name="index-Edit-Position_002c-Menu-Item-27"></a>Lets you set up an arbitrary board position.
377 The shifted <kbd>Ctrl-E</kbd> key is a keyboard equivalent.
378 Use mouse button 1 to drag pieces to new squares, or to delete a piece
379 by dragging it off the board or dragging an empty square on top of it.
380 To drop a new piece on a square, press mouse button 2 or 3 over the
382 This puts a white or black pawn in the square, respectively,
383 but you can change that to any other piece type by dragging the
384 mouse down before you release the button.
385 You will then see the piece on the originally clicked square
386 cycle through the available pieces
387 (including those of opposite color),
388 and can release the button when you see the piece you want.
389 To alter the side to move, you can click the clock
390 (the words White and Black above the board)
391 of the side you want to give the move to.
392 To clear the board you can click the clock of the side that
393 alread has the move (which is highlighted in black).
394 The old behavior with a piece menu can still be configured
395 with the aid of the <code>pieceMenu</code> option.
396 Selecting ‘<samp><span class="samp">Edit Position</span></samp>’ causes XBoard to discard
397 all remembered moves in the current game.
399 <p>In ICS mode, changes made to the position by ‘<samp><span class="samp">Edit Position</span></samp>’ are
400 not sent to the ICS: ‘<samp><span class="samp">Edit Position</span></samp>’ takes XBoard out of
401 ‘<samp><span class="samp">ICS Client</span></samp>’ mode and lets you edit positions locally. If you want to
402 edit positions on ICS in a way that other ICS users can see, use
403 the ICS <kbd>examine</kbd> command, or start an ICS match against yourself.
404 (See also the ICS Client topic above.)
405 <br><dt>Edit Tags<dd><a name="index-Edit-Tags_002c-Menu-Item-28"></a>Lets you edit the PGN (portable game notation)
406 tags for the current game. After editing, the tags must still conform to
409 <pre class="example"> <tag-section> ::= <tag-pair> <tag-section>
411 <tag-pair> ::= [ <tag-name> <tag-value> ]
412 <tag-name> ::= <identifier>
413 <tag-value> ::= <string>
415 <p class="noindent">See the PGN Standard for full details. Here is an example:
417 <pre class="example"> [Event "Portoroz Interzonal"]
418 [Site "Portoroz, Yugoslavia"]
421 [White "Robert J. Fischer"]
422 [Black "Bent Larsen"]
425 <p class="noindent">Any characters that do not match this syntax are silently ignored. Note that
426 the PGN standard requires all games to have at least the seven tags shown
427 above. Any that you omit will be filled in by XBoard
428 with ‘<samp><span class="samp">?</span></samp>’ (unknown value), or ‘<samp><span class="samp">-</span></samp>’ (inapplicable value).
429 <br><dt>Edit Comment<dd><a name="index-Edit-Comment_002c-Menu-Item-29"></a>Adds or modifies a comment on the current position. Comments are
430 saved by ‘<samp><span class="samp">Save Game</span></samp>’ and are displayed by ‘<samp><span class="samp">Load Game</span></samp>’,
431 ‘<samp><span class="samp">Forward</span></samp>’, and ‘<samp><span class="samp">Backward</span></samp>’.
432 <br><dt>Edit Book<dd><a name="index-Edit-Book_002c-Menu-Item-30"></a>Pops up a window listing the moves available in the GUI book
433 (specified in the ‘<samp><span class="samp">Common Engine Settings</span></samp>’ dialog)
434 from the currently displayed position,
435 together with their weights and (optionally in braces) learn info.
436 You can then edit this list, and the new list will be stored
437 back into the book when you press OK.
438 Note that the listed percentages are neither used, nor updated when
439 you change the weights; they are just there as an optical aid.
440 <br><dt>Revert<dt>Annotate<dd><a name="index-Revert_002c-Menu-Item-31"></a><a name="index-Annotate_002c-Menu-Item-32"></a>If you are examining an ICS game and Pause mode is off,
441 Revert issues the ICS command ‘<samp><span class="samp">revert</span></samp>’.
442 In local mode, when you were editing or analyzing a game,
443 and the <code>-variations</code> command-line option is switched on,
444 you can start a new variation by holding the Shift key down while
445 entering a move not at the end of the game.
446 Variations can also become the currently displayed line by
447 clicking a PGN variation displayed in the Comment window.
448 This can be applied recursively,
449 so that you can analyze variations on variations;
450 each time you create a new variation by entering an alternative move
451 with Shift pressed, or select a new one from the Comment window,
452 the current variation will be shelved.
453 ‘<samp><span class="samp">Revert</span></samp>’ allows you to return to the most recently shelved variation.
454 The difference between ‘<samp><span class="samp">Revert</span></samp>’ and ‘<samp><span class="samp">Annotate</span></samp>’
455 is that with the latter,
456 the variation you are now abandoning will be added as a comment
457 (in PGN variation syntax, i.e. between parentheses)
458 to the original move where you deviated, for later recalling.
459 The <kbd>Home</kbd> key is a keyboard equivalent to ‘<samp><span class="samp">Revert</span></samp>’.
460 <br><dt>Truncate Game<dd><a name="index-Truncate-Game_002c-Menu-Item-33"></a>Discards all remembered moves of the game beyond the current
461 position. Puts XBoard into ‘<samp><span class="samp">Edit Game</span></samp>’ mode if it was not there
463 The <kbd>End</kbd> key is a keyboard equivalent.
464 <br><dt>Backward<dd><a name="index-Backward_002c-Menu-Item-34"></a><a name="index-g_t_003c_002c-Button-35"></a>Steps backward through a series of remembered moves.
465 The ‘<samp><span class="samp">[<]</span></samp>’ button and the <kbd>Alt+LeftArrow</kbd> key are equivalents,
466 as is turning the mouse wheel towards you.
467 In addition, pressing the Control key steps back one move, and releasing
468 it steps forward again.
470 <p>In most modes, ‘<samp><span class="samp">Backward</span></samp>’ only lets you look back at old positions;
471 it does not retract moves. This is the case if you are playing against
472 a chess engine, playing or observing a game on an ICS, or loading a game.
473 If you select ‘<samp><span class="samp">Backward</span></samp>’ in any of these situations, you will not
474 be allowed to make a different move. Use ‘<samp><span class="samp">Retract Move</span></samp>’ or
475 ‘<samp><span class="samp">Edit Game</span></samp>’ if you want to change past moves.
477 <p>If you are examining an ICS game, the behavior of ‘<samp><span class="samp">Backward</span></samp>’
478 depends on whether XBoard is in Pause mode. If Pause mode is
479 off, ‘<samp><span class="samp">Backward</span></samp>’ issues the ICS backward command, which backs up
480 everyone's view of the game and allows you to make a different
481 move. If Pause mode is on, ‘<samp><span class="samp">Backward</span></samp>’ only backs up your local
483 <br><dt>Forward<dd><a name="index-Forward_002c-Menu-Item-36"></a><a name="index-g_t_003e_002c-Button-37"></a>Steps forward through a series of remembered moves (undoing the
484 effect of ‘<samp><span class="samp">Backward</span></samp>’) or forward through a game file. The
485 ‘<samp><span class="samp">[>]</span></samp>’ button and the <kbd>Alt+RightArrow</kbd> key are equivalents,
486 as is turning the mouse wheel away from you.
488 <p>If you are examining an ICS game, the behavior of Forward
489 depends on whether XBoard is in Pause mode. If Pause mode is
490 off, ‘<samp><span class="samp">Forward</span></samp>’ issues the ICS forward command, which moves
491 everyone's view of the game forward along the current line. If
492 Pause mode is on, ‘<samp><span class="samp">Forward</span></samp>’ only moves your local view forward,
493 and it will not go past the position that the game was in when
495 <br><dt>Back to Start<dd><a name="index-Back-to-Start_002c-Menu-Item-38"></a><a name="index-g_t_003c_003c_002c-Button-39"></a>Jumps backward to the first remembered position in the game.
496 The ‘<samp><span class="samp">[<<]</span></samp>’ button and the <kbd>Alt+Home</kbd> key are equivalents.
498 <p>In most modes, Back to Start only lets you look back at old
499 positions; it does not retract moves. This is the case if you
500 are playing against a local chess engine, playing or observing a game on
501 a chess server, or loading a game. If you select ‘<samp><span class="samp">Back to Start</span></samp>’ in any
502 of these situations, you will not be allowed to make different
503 moves. Use ‘<samp><span class="samp">Retract Move</span></samp>’ or ‘<samp><span class="samp">Edit Game</span></samp>’ if you want to change past
504 moves; or use Reset to start a new game.
506 <p>If you are examining an ICS game, the behavior of ‘<samp><span class="samp">Back to
507 Start</span></samp>’ depends on whether XBoard is in Pause mode. If Pause mode
508 is off, ‘<samp><span class="samp">Back to Start</span></samp>’ issues the ICS ‘<samp><span class="samp">backward 999999</span></samp>’
509 command, which backs up everyone's view of the game to the start and
510 allows you to make different moves. If Pause mode is on, ‘<samp><span class="samp">Back
511 to Start</span></samp>’ only backs up your local view.
512 <br><dt>Forward to End<dd><a name="index-Forward-to-End_002c-Menu-Item-40"></a><a name="index-g_t_003e_003e_002c-Button-41"></a>Jumps forward to the last remembered position in the game. The
513 ‘<samp><span class="samp">[>>]</span></samp>’ button and the <kbd>Alt+End</kbd> key are equivalents.
515 <p>If you are examining an ICS game, the behavior of ‘<samp><span class="samp">Forward to
516 End</span></samp>’ depends on whether XBoard is in Pause mode. If Pause mode
517 is off, ‘<samp><span class="samp">Forward to End</span></samp>’ issues the ICS ‘<samp><span class="samp">forward 999999</span></samp>’
518 command, which moves everyone's view of the game forward to the end of
519 the current line. If Pause mode is on, ‘<samp><span class="samp">Forward to End</span></samp>’ only moves
520 your local view forward, and it will not go past the position
521 that the game was in when you paused.
525 <a name="View-Menu"></a>
527 Next: <a rel="next" accesskey="n" href="#Mode-Menu">Mode Menu</a>,
528 Previous: <a rel="previous" accesskey="p" href="#Edit-Menu">Edit Menu</a>,
529 Up: <a rel="up" accesskey="u" href="#Menus">Menus</a>
533 <h3 class="section">3.3 View Menu</h3>
535 <p><a name="index-Menu_002c-View-42"></a><a name="index-View-Menu-43"></a>
537 <dt>Flip View<dd><a name="index-Flip-View_002c-Menu-Item-44"></a>Inverts your view of the chess board for the duration of the
538 current game. Starting a new game returns the board to normal.
539 The <kbd>F2</kbd> key is a keyboard equivalent.
540 <br><dt>Show Engine Output<dd><a name="index-Show-Engine-Output_002c-Menu-Item-45"></a>Shows or hides a window in which the thinking output of any loaded engines
541 is displayed. The shifted <kbd>Alt+O</kbd> key is a keyboard equivalent.
542 XBoard will display lines of thinking output of the same depth ordered by score,
543 (highest score on top), rather than in the order the engine produced them.
544 Usually this amounts to the same, as a normal engine search will only find new PV
545 (and emit it as thinking output)
546 when it searches a move with a higher score than the previous variation.
547 But when the engine is in multi-variation mode this needs not always be true,
548 and it is more convenient for someone analyzing games to see the moves sorted by score.
549 The order in which the engine found them is only of interest to the engine author,
550 and can still be deduced from the time or node count printed with the line.
551 <br><dt>Show Move History<dd><a name="index-Show-Move-History_002c-Menu-Item-46"></a>Shows or hides a list of moves of the current game.
552 The shifted <kbd>Alt+H</kbd> key is a keyboard equivalent.
553 This list allows you to move the display to any earlier position in the game
554 by clicking on the corresponding move.
555 <br><dt>Show Evaluation Graph<dd><a name="index-Show-Evaluation-Graph_002c-Menu-Item-47"></a>Shows or hides a window which displays a graph of how the engine score(s)
556 evolved as a function of the move number.
557 The shifted <kbd>Alt+E</kbd> key is a keyboard equivalent.
558 Clicking on the graph will bring
559 the corresponding position in the board display.
560 <br><dt>Show Game List<dd><a name="index-Show-Game-List_002c-Menu-Item-48"></a>Shows or hides the list of games generated by the last ‘<samp><span class="samp">Load Game</span></samp>’
561 command. The shifted <kbd>Alt+G</kbd> key is a keyboard equivalent.
562 <br><dt>Tags<dd><a name="index-Tags_002c-Menu-Item-49"></a>Pops up a window which shows the PGN (portable game notation)
563 tags for the current game.
564 For now this is a duplicate of the ‘<samp><span class="samp">Edit Tags</span></samp>’ item in the ‘<samp><span class="samp">Edit</span></samp>’ menu.
565 <br><dt>Comments<dd><a name="index-Comments_002c-Menu-Item-50"></a>Pops up a window which shows any comments to or variations on the current move.
566 For now this is a duplicate of the ‘<samp><span class="samp">Edit Comment</span></samp>’ item in the ‘<samp><span class="samp">Edit</span></samp>’ menu.
567 <br><dt>ICS Input Box<dd><a name="index-ICS-Input-Box_002c-Menu-Item-51"></a>If this option is set in ICS mode,
569 creates an extra window that you can use for typing in ICS commands.
570 The input box is especially useful if you want to type in something long or do
571 some editing on your input, because output from ICS doesn't get mixed
572 in with your typing as it would in the main terminal window.
573 <br><dt>Board<dd><a name="index-Board_002c-Menu-Item-52"></a>Summons a dialog where you can customaize the look of the chess board.
574 Here you can specify the directory from which piece images should be taken,
575 when you don't want to use the built-in piece images
576 (see <code>pixmapDirectory</code> and <code>bitmapDirectory</code> options),
577 an external pixmap to be used for the board squares
578 (<code>liteBackTextureFile</code> and <code>darkBackTextureFile</code> options),
579 and square and piece colors for the built-ins.
580 <br><dt>Game List Tags<dd><a name="index-Game-List-Tags_002c-Menu-Item-53"></a>a duplicate of the Game List dialog in the Options menu.
584 <a name="Mode-Menu"></a>
586 Next: <a rel="next" accesskey="n" href="#Action-Menu">Action Menu</a>,
587 Previous: <a rel="previous" accesskey="p" href="#View-Menu">View Menu</a>,
588 Up: <a rel="up" accesskey="u" href="#Menus">Menus</a>
592 <h3 class="section">3.4 Mode Menu</h3>
594 <p><a name="index-Menu_002c-Mode-54"></a><a name="index-Mode-Menu-55"></a>
596 <dt>Machine White<dd><a name="index-Machine-White_002c-Menu-Item-56"></a>Tells the chess engine to play White.
597 The <kbd>Ctrl-W</kbd> key is a keyboard equivalent.
598 <br><dt>Machine Black<dd><a name="index-Machine-Black_002c-Menu-Item-57"></a>Tells the chess engine to play Black.
599 The <kbd>Ctrl-B</kbd> key is a keyboard equivalent.
600 <br><dt>Two Machines<dd><a name="index-Two-Machines_002c-Menu-Item-58"></a>Plays a game between two chess engines.
601 The <kbd>Ctrl-T</kbd> key is a keyboard equivalent.
602 <br><dt>Analysis Mode<dd><a name="index-Analysis-Mode_002c-Menu-Item-59"></a><a name="index-null-move-60"></a>XBoard tells the chess engine to start analyzing the current game/position
603 and shows you the analysis as you move pieces around.
604 The <kbd>Ctrl-A</kbd> key is a keyboard equivalent.
605 Note: Some chess engines do not support Analysis mode.
607 <p>To set up a position to analyze, you do the following:
609 <p>1. Select Edit Position from the Mode Menu
611 <p>2. Set up the position. Use the middle and right buttons to
612 bring up the white and black piece menus.
614 <p>3. When you are finished, click on either the Black or White
615 clock to tell XBoard which side moves first.
617 <p>4. Select Analysis Mode from the Mode Menu to start the analysis.
619 <p>You can now play legal moves to create follow-up positions for the
620 engine to analyze, while the moves will be remembered as a stored game,
621 and then step backward through this game to take the moves back.
622 Note that you can also click on the clocks to set the opposite
623 side to move (adding a so-called ‘<samp><span class="samp">null move</span></samp>’ to the game).
625 <p>The analysis function can also be used when observing games on an ICS
626 with an engine loaded (zippy mode); the engine then will analyse
627 the positions as they occur in the observed game.
628 <br><dt>Analyze Game<dd><a name="index-Analyze-Game_002c-Menu-Item-61"></a>This option subjects the currently loaded game to automatic
629 analysis by the loaded engine.
630 The <kbd>Ctrl-G</kbd> key is a keyboard equivalent.
631 XBoard will start auto-playing the game from the currently displayed position,
632 while the engine is analyzing the current position.
633 The game will be annotated with the results of these analyses.
634 In particlar, the score and depth will be added as a comment,
635 and the PV will be added as a variation.
636 The time the engine spends on analyzing each move can be controlled
637 through the command-line option ‘<samp><span class="samp">-timeDelay</span></samp>’.
638 Note: Some chess engines do not support Analysis mode.
639 <br><dt>Edit Game<dd>Duplicate of the item in the Edit menu.
640 Note that ‘<samp><span class="samp">Edit Game</span></samp>’ is the idle mode of XBoard, and can be used
641 to get you out of other modes. E.g. to stop analyzing, stop a game
642 between two engines or stop editing a position.
643 <br><dt>Edit Position<dd>Duplicate of the item in the Edit menu.
644 <br><dt>Training<dd><a name="index-Training_002c-Menu-Item-62"></a>Training mode lets you interactively guess the moves of a game for one
645 of the players. You guess the next move of the game by playing the
646 move on the board. If the move played matches the next move of the
647 game, the move is accepted and the opponent's response is auto-played.
648 If the move played is incorrect, an error message is displayed. You
649 can select this mode only while loading a game (that is, after
650 selecting ‘<samp><span class="samp">Load Game</span></samp>’ from the File menu). While XBoard is in
651 ‘<samp><span class="samp">Training</span></samp>’ mode, the navigation buttons are disabled.
652 <br><dt>ICS Client<dd><a name="index-ICS-Client_002c-Menu-Item-63"></a>This is the normal mode when XBoard
653 is connected to a chess server. If you have moved into
654 Edit Game or Edit Position mode, you can select this option to get out.
656 <p>To use xboard in ICS mode, run it in the foreground with the -ics
657 option, and use the terminal you started it from to type commands and
658 receive text responses from the chess server. See
659 <a href="#Chess-Servers">Chess Servers</a> below for more information.
661 <p>XBoard activates some special position/game editing features when you
662 use the <kbd>examine</kbd> or <kbd>bsetup</kbd> commands on ICS and you have
663 ‘<samp><span class="samp">ICS Client</span></samp>’ selected on the Mode menu. First, you can issue the
664 ICS position-editing commands with the mouse. Move pieces by dragging
665 with mouse button 1. To drop a new piece on a square, press mouse
666 button 2 or 3 over the square. This brings up a menu of white pieces
667 (button 2) or black pieces (button 3). Additional menu choices let
668 you empty the square or clear the board. Click on the White or Black
669 clock to set the side to play. You cannot set the side to play or
670 drag pieces to arbitrary squares while examining on ICC, but you can
671 do so in <kbd>bsetup</kbd> mode on FICS. In addition, the menu commands
672 ‘<samp><span class="samp">Forward</span></samp>’, ‘<samp><span class="samp">Backward</span></samp>’, ‘<samp><span class="samp">Pause</span></samp>’, and ‘<samp><span class="samp">Stop Examining</span></samp>’
673 have special functions in this mode; see below.
674 <br><dt>Machine Match<dd><a name="index-Machine-match_002c-Menu-Item-64"></a>Starts a match between two chess programs,
675 with a number of games and other parameters set through
676 the ‘<samp><span class="samp">Match Options</span></samp>’ menu dialog.
677 When a match is already running, selecting this item will make
678 XBoard drop out of match mode after the current game finishes.
679 <br><dt>Pause<dd><a name="index-Pause_002c-Menu-Item-65"></a>Pauses updates to the board, and if you are playing against a chess engine,
680 also pauses your clock. To continue, select ‘<samp><span class="samp">Pause</span></samp>’ again, and the
681 display will automatically update to the latest position.
682 The ‘<samp><span class="samp">P</span></samp>’ button and keyboard <kbd>Pause</kbd> key are equivalents.
684 <p>If you select Pause when you are playing against a chess engine and
685 it is not your move, the chess engine's clock
686 will continue to run and it will eventually make a move, at which point
687 both clocks will stop. Since board updates are paused, however,
688 you will not see the move until you exit from Pause mode (or select Forward).
689 This behavior is meant to simulate adjournment with a sealed move.
691 <p>If you select Pause while you are observing or examining a game on a
692 chess server, you can step backward and forward in the current history
693 of the examined game without affecting the other observers and
694 examiners, and without having your display jump forward to the latest
695 position each time a move is made. Select Pause again to reconnect
696 yourself to the current state of the game on ICS.
698 <p>If you select ‘<samp><span class="samp">Pause</span></samp>’ while you are loading a game, the game stops
699 loading. You can load more moves manually by selecting ‘<samp><span class="samp">Forward</span></samp>’, or
700 resume automatic loading by selecting ‘<samp><span class="samp">Pause</span></samp>’ again.
704 <a name="Action-Menu"></a>
706 Next: <a rel="next" accesskey="n" href="#Engine-Menu">Engine Menu</a>,
707 Previous: <a rel="previous" accesskey="p" href="#Mode-Menu">Mode Menu</a>,
708 Up: <a rel="up" accesskey="u" href="#Menus">Menus</a>
712 <h3 class="section">3.5 Action Menu</h3>
714 <p><a name="index-Menu_002c-Action-66"></a><a name="index-Action_002c-Menu-67"></a>
716 <dt>Accept<dd><a name="index-Accept_002c-Menu-Item-68"></a>Accepts a pending match offer.
717 The <kbd>F3</kbd> key is a keyboard equivalent.
718 If there is more than one offer
719 pending, you will have to type in a more specific command
720 instead of using this menu choice.
721 <br><dt>Decline<dd><a name="index-Decline_002c-Menu-Item-69"></a>Declines a pending offer (match, draw, adjourn, etc.).
722 The <kbd>F4</kbd> key is a keyboard equivalent. If there
723 is more than one offer pending, you will have to type in a more
724 specific command instead of using this menu choice.
725 <br><dt>Call Flag<dd><a name="index-Call-Flag_002c-Menu-Item-70"></a>Calls your opponent's flag, claiming a win on time, or claiming
726 a draw if you are both out of time.
727 The <kbd>F5</kbd> key is a keyboard equivalent.
728 You can also call your
729 opponent's flag by clicking on his clock.
730 <br><dt>Draw<dd><a name="index-Draw_002c-Menu-Item-71"></a>Offers a draw to your opponent, accepts a pending draw offer
731 from your opponent, or claims a draw by repetition or the 50-move
732 rule, as appropriate. The <kbd>F6</kbd> key is a keyboard equivalent.
733 <br><dt>Adjourn<dd><a name="index-Adjourn_002c-Menu-Item-72"></a>Asks your opponent to agree to adjourning the current game, or
734 agrees to a pending adjournment offer from your opponent.
735 The <kbd>F7</kbd> key is a keyboard equivalent.
736 <br><dt>Abort<dd><a name="index-Abort_002c-Menu-Item-73"></a>Asks your opponent to agree to aborting the current game, or
737 agrees to a pending abort offer from your opponent.
738 The <kbd>F8</kbd> key is a keyboard equivalent. An aborted
739 game ends immediately without affecting either player's rating.
740 <br><dt>Resign<dd><a name="index-Resign_002c-Menu-Item-74"></a>Resigns the game to your opponent. The <kbd>F9</kbd> key is a
742 <br><dt>Stop Observing<dd><a name="index-Stop-Observing_002c-Menu-Item-75"></a>Ends your participation in observing a game, by issuing the ICS
743 observe command with no arguments. ICS mode only.
744 The <kbd>F10</kbd> key is a keyboard equivalent.
745 <br><dt>Stop Examining<dd><a name="index-Stop-Examining_002c-Menu-Item-76"></a>Ends your participation in examining a game, by issuing the ICS
746 unexamine command. ICS mode only.
747 The <kbd>F11</kbd> key is a keyboard equivalent.
748 <br><dt>Upload to Examine<dd><a name="index-Upload-to-Examine_002c-Menu-Item-77"></a>Create an examined game of the proper variant on the ICS,
749 and send the game there that is currenty loaded in XBoard
750 (e.g. through pasting or loading from file).
751 You must be connected to an ICS for this to work.
752 <br><dt>Adjudicate to White<dt>Adjudicate to Black<dt>Adjudicate Draw<dd><a name="index-Adjudicate-to-White_002c-Menu-Item-78"></a><a name="index-Adjudicate-to-Black_002c-Menu-Item-79"></a><a name="index-Adjudicate-Draw_002c-Menu-Item-80"></a>Terminate an ongoing game in Two-Machines mode (including match mode),
753 with as result a win for white, for black, or a draw, respectively.
754 The PGN file of the game will accompany the result string
755 by the comment "user adjudication".
759 <a name="Engine-Menu"></a>
761 Next: <a rel="next" accesskey="n" href="#Options-Menu">Options Menu</a>,
762 Previous: <a rel="previous" accesskey="p" href="#Action-Menu">Action Menu</a>,
763 Up: <a rel="up" accesskey="u" href="#Menus">Menus</a>
767 <h3 class="section">3.6 Engine Menu</h3>
769 <p><a name="index-Engine-Menu-81"></a><a name="index-Menu_002c-Engine-82"></a>
771 <dt>Load Engine<dd><a name="index-Load-Engine_002c-Menu-Item-83"></a>Pops up a dialog where you can select or specify an engine to be loaded.
772 You will always have to indicate whether you want to load the engine
773 as first or second engine, through the ‘Load menitioned engine as’
774 drop-down list at the bottom of the dialog.
775 You can even replace engines during a game, without disturbing that game.
776 (Beware that after loading an engine, XBoard will always be in Edit Game mode,
777 so you will have to tell the new engine what to do before it does anything!)
778 When you select an already installed engine from the ‘Select Engine from List’
780 all other fields of the dialog will be ignored.
781 In other cases, you have to specify the engine executable,
782 possible arguments on the engine command line
783 (if the engine docs say the engine needs any),
784 and the directory where the engine should look for its files
785 (if this cannot be deduced automatically from the specification of the engine executable).
786 You will also have to specify (with the aid of checkboxes) if the engine is UCI.
787 If ‘Add this engine to the list’ is ticked (which it is by default),
788 the engine will be added to the list of installed engines in your settings file,
789 (provided you save the settings!),
790 so that next time you can select it from the drop-down list.
791 You can also specify a ‘nickname’,
792 under which the engine will then appear in that drop-down list,
793 and even choose to use that nickname for it in PGN files for engine-engine games.
794 The info you supply with the checkboxes whether the engine should use GUI book,
795 or (for variant engines) automatically switch to the current variant when loaded,
796 will also be included in the list.
797 For obsolete XBoard engines, which would normally take a long delay to load
798 because XBoard is waiting for a response they will not give,
799 you can tick ‘WB protocol v1’ to speed up the loading process.
800 <br><dt>Engine #N Settings<dd><a name="index-Engine-Settings_002c-Menu-Item-84"></a><a name="index-Engine-_00231-Settings_002c-Menu-Item-85"></a><a name="index-Engine-_00232-Settings_002c-Menu-Item-86"></a>Pop up a menu dialog to alter the settings specific to the applicable engine.
801 (The second engine is only accessible once it has been used in Two-Machines mode.)
802 For each parameter the engine allows to be set,
803 a control element will appear in this dialog that can be used to alter the value.
804 Depending on the type of parameter (text string, number, multiple choice,
805 on/off switch, instantaneous signal) the appropriate control will appear,
806 with a description next to it.
807 XBoard has no idea what these values mean; it just passes them on to the engine.
808 How this dialog looks is completely determined by the engine,
809 and XBoard just passes it on to the user.
810 Many engines do not have any parameters that can be set by the user,
811 and in that case the dialog will be empty (except for the OK and cancel buttons).
812 UCI engines usually have many parameters. (But these are only visible with
813 a sufficiently modern version of the Polyglot adapter needed to run UCI engines,
814 e.g. Polyglot 1.4.55b.) For native XBoard engines this is less common.
815 <br><dt>Hint<dd><a name="index-Hint_002c-Menu-Item-87"></a>Displays a move hint from the chess engine.
816 <br><dt>Book<dd><a name="index-Book_002c-Menu-Item-88"></a>Displays a list of possible moves from the chess engine's opening
817 book. The exact format depends on what chess engine you are using.
818 With GNU Chess 4, the first column gives moves, the second column
819 gives one possible response for each move, and the third column shows
820 the number of lines in the book that include the move from the first
821 column. If you select this option and nothing happens, the chess
822 engine is out of its book or does not support this feature.
823 <br><dt>Move Now<dd><a name="index-Move-Now_002c-Menu-Item-89"></a>Forces the chess engine to move immediately. Chess engine mode only.
824 The <kbd>Ctrl-M</kbd> key is a keyboard equivalent.
825 <br><dt>Retract Move<dd><a name="index-Retract-Move_002c-Menu-Item-90"></a>Retracts your last move. In chess engine mode, you can do this only
826 after the chess engine has replied to your move; if the chess engine is still
827 thinking, use ‘<samp><span class="samp">Move Now</span></samp>’ first. In ICS mode, ‘<samp><span class="samp">Retract Move</span></samp>’
828 issues the command ‘<samp><span class="samp">takeback 1</span></samp>’ or ‘<samp><span class="samp">takeback 2</span></samp>’
829 depending on whether it is your opponent's move or yours.
830 The <kbd>Ctrl-X</kbd> key is a keyboard equivalent.
831 <br><dt>Recently Used Engines<dd><a name="index-Recently-Used-Engines_002c-In-Menu-91"></a>At the bottom of the engine menu there can be a list of names
832 of engines that you recently loaded through the Load Engine menu dialog
833 in previous sessions.
834 Clicking on such a name will load that engine as first engine,
835 so you won't have to search for it in your list of installed engines,
836 if that is very long.
837 The maximum number of displayed engine names is set by the
838 <code>recentEngines</code>command-line option.
842 <a name="Options-Menu"></a>
844 Next: <a rel="next" accesskey="n" href="#Help-Menu">Help Menu</a>,
845 Previous: <a rel="previous" accesskey="p" href="#Engine-Menu">Engine Menu</a>,
846 Up: <a rel="up" accesskey="u" href="#Menus">Menus</a>
850 <h3 class="section">3.7 Options Menu</h3>
852 <p><a name="index-Menu_002c-Options-92"></a><a name="index-Options-Menu-93"></a>
854 <dt>General Options<dd><a name="index-General-Options_002c-Menu-Item-94"></a>The following items to set option values appear in the dialog
855 summoned by the general Options menu item.
856 <dt>Absolute Analysis Scores<dd><a name="index-Absolute-Analysis-Scores_002c-Menu-Item-95"></a>Controls if scores on the Engine Output window during analysis
857 will be printed from the white or the side-to-move point-of-view.
858 <dt>Almost Always Queen<dd><a name="index-Almost-Always-Queen_002c-Menu-Item-96"></a>If this option is on, 7th-rank pawns automatically change into
859 Queens when you pick them up,
860 and when you drag them to the promotion square and release them there,
861 they will promote to that.
862 But when you drag such a pawn backwards first,
863 its identity will start to cycle through the other available pieces.
864 This will continue until you start to move it forward;
865 at which point the identity of the piece will be fixed,
866 so that you can safely put it down on the promotion square.
867 If this option is off, what happens depends on the
868 option <code>alwaysPromoteToQueen</code>,
869 which would force promotion to Queen when true.
870 Otherwise XBoard would bring up a dialog
871 box whenever you move a pawn to the last rank, asking what piece
872 you want to promote to.
873 <dt>Animate Dragging<dd><a name="index-Animate-Dragging_002c-Menu-Item-97"></a>If Animate Dragging is on, while you are dragging a piece with the
874 mouse, an image of the piece follows the mouse cursor.
875 If Animate Dragging is off, there is no visual feedback while you are
876 dragging a piece, but if Animate Moving is on, the move will be
877 animated when it is complete.
878 <dt>Animate Moving<dd><a name="index-Animate-Moving_002c-Menu-Item-98"></a>If Animate Moving is on, all piece moves are animated. An image of the
879 piece is shown moving from the old square to the new square when the
880 move is completed (unless the move was already animated by Animate Dragging).
881 If Animate Moving is off, a moved piece instantly disappears from its
882 old square and reappears on its new square when the move is complete.
883 The shifted <kbd>Ctrl-A</kbd> key is a keyboard equivalent.
884 <dt>Auto Flag<dd><a name="index-Auto-Flag_002c-Menu-Item-99"></a>If this option is on and one player runs out of time
887 will automatically call his flag, claiming a win on time.
888 The shifted <kbd>Ctrl-F</kbd> key is a keyboard equivalent.
889 In ICS mode, Auto Flag will only call your opponent's flag, not yours,
890 and the ICS may award you a draw instead of a win if you have
891 insufficient mating material. In local chess engine mode,
893 may call either player's flag and will not take material into account (?).
894 <dt>Auto Flip View<dd><a name="index-Auto-Flip-View_002c-Menu-Item-100"></a>If the Auto Flip View option is on when you start a game, the board
895 will be automatically oriented so that your pawns move from the bottom
896 of the window towards the top.
898 <p>If you are playing a game on an ICS, the board is always
899 oriented at the start of the game so that your pawns move from
900 the bottom of the window towards the top. Otherwise, the starting
901 orientation is determined by the <code>flipView</code> command line option;
902 if it is false (the default), White's pawns move from bottom to top
903 at the start of each game; if it is true, Black's pawns move from
904 bottom to top. See <a href="#User-interface-options">User interface options</a>.
905 <dt>Blindfold<dd><a name="index-Blindfold_002c-Menu-Item-101"></a>If this option is on, XBoard displays the board as usual but does
906 not display pieces or move highlights. You can still move in the
907 usual way (with the mouse or by typing moves in ICS mode), even though
908 the pieces are invisible.
909 <dt>Drop Menu<dd><a name="index-Drop-Menu_002c-Menu-Item-102"></a>Controls if right-clicking the board in crazyhouse / bughouse
910 will pop up a menu to drop a piece on the clicked square
911 (old, deprecated behavior)
912 or allow you to step through an engine PV
913 (new, recommended behavior).
914 <dt>Hide Thinking<dd><a name="index-Hide-Thinking_002c-Menu-Item-103"></a>If this option is off, the chess engine's notion of the score and best
915 line of play from the current position is displayed as it is
916 thinking. The score indicates how many pawns ahead (or if negative,
917 behind) the chess engine thinks it is. In matches between two
918 machines, the score is prefixed by ‘<samp><span class="samp">W</span></samp>’ or ‘<samp><span class="samp">B</span></samp>’ to indicate
919 whether it is showing White's thinking or Black's, and only the thinking
920 of the engine that is on move is shown.
921 The shifted <kbd>Ctrl-H</kbd> key is a keyboard equivalent.
922 <dt>Highlight Last Move<dd><a name="index-Highlight-Last-Move_002c-Menu-Item-104"></a>If Highlight Last Move is on, after a move is made, the starting and
923 ending squares remain highlighted. In addition, after you use Backward
924 or Back to Start, the starting and ending squares of the last move to
925 be unmade are highlighted.
926 <dt>Highlight with Arrow<dd><a name="index-Highlight-with-Arrow_002c-Menu-Item-105"></a>Causes the highlighting described in Highlight Last Move to be done
927 by drawing an arrow between the highlighted squares,
928 so that it is visible even when the width of the grid lines is set to zero.
929 <dt>Move Sound<dd><a name="index-Move-Sound_002c-Menu-Item-106"></a>Enables the sounding of an audible signal when the computer performs a move.
930 For the selection of the sound, see ‘<samp><span class="samp">Sound Options</span></samp>’.
931 If you turn on this option when using XBoard with the Internet
932 Chess Server, you will probably want to give the
933 <kbd>set bell 0</kbd>
934 command to the ICS, since otherwise the ICS will ring the terminal bell
935 after every move (not just yours). (The <samp><span class="file">.icsrc</span></samp> file
936 is a good place for this; see <a href="#ICS-options">ICS options</a>.)
937 <dt>One-Click Moving<dd><a name="index-One_002dClick-Moving_002c-Menu-Item-107"></a>If this option is on, XBoard does not wait for you to click both the
938 from- and the to-square, or drag the piece, but performs a move as soon
939 as it is uniqely specified.
940 This applies to clicking an own piece that only has a single legal move,
941 clicking an empty square or opponent piece where only one of your pieces
942 can move (or capture) to.
943 Furthermore, a double-click on a piece that can only make a single capture
944 will cause that capture to be made.
945 Promoting a Pawn by clicking its to-square will suppress the promotion
946 popup or other methods for selecting an under-promotion,
947 and make it promote to Queen.
948 <dt>Periodic Updates<dd><a name="index-Periodic-Updates_002c-Menu-Item-108"></a>If this option is off (or if
949 you are using a chess engine that does not support periodic updates),
951 will only be updated when the analysis changes. If this option is
952 on, the Analysis Window will be updated every two seconds.
953 <dt>Ponder Next Move<dd><a name="index-Ponder-Next-Move_002c-Menu-Item-109"></a>If this option is off, the chess engine will think only when it is on
954 move. If the option is on, the engine will also think while waiting
955 for you to make your move.
956 The shifted <kbd>Ctrl-P</kbd> key is a keyboard equivalent.
957 <dt>Popup Exit Message<dd><a name="index-Popup-Exit-Message_002c-Menu-Item-110"></a>If this option is on, when XBoard wants to display a message just
958 before exiting, it brings up a modal dialog box and waits for you to
959 click OK before exiting. If the option is off, XBoard prints the
960 message to standard error (the terminal) and exits immediately.
961 <dt>Popup Move Errors<dd><a name="index-Popup-Move-Errors_002c-Menu-Item-111"></a>If this option is off, when you make an error in moving (such as
962 attempting an illegal move or moving the wrong color piece), the
963 error message is displayed in the message area. If the option is
964 on, move errors are displayed in small pop-up windows like other errors.
965 You can dismiss an error pop-up either by clicking its OK button or by
966 clicking anywhere on the board, including down-clicking to start a move.
967 <dt>Scores in Move List<dd><a name="index-Scores-in-Move-List_002c-Menu-Item-112"></a>If this option is on, XBoard will display the depth and score
968 of engine moves in the Move List, in the format of a PGN comment.
969 <dt>Show Coords<dd><a name="index-Show-Coords_002c-Menu-Item-113"></a>If this option is on, XBoard displays algebraic coordinates
970 along the board's left and bottom edges.
971 <dt>Show Target Squares<dd><a name="index-Show-Target-Squares_002c-Menu-Item-114"></a>If this option is on, all squares a piece that is 'picked up' with the mouse
972 can legally move to are highighted with a fat colored dot in the
973 highlightColor (non-captures) or premoveHighlightColor (captures).
974 Legality testing must be on for XBoard to know how the piece moves.
975 <dt>Test Legality<dd><a name="index-Test-Legality_002c-Menu-Item-115"></a>If this option is on, XBoard tests whether the moves you try to make
976 with the mouse are legal and refuses to let you make an illegal move.
977 The shifted <kbd>Ctrl-L</kbd> key is a keyboard equivalent.
978 Moves loaded from a file with ‘<samp><span class="samp">Load Game</span></samp>’ are also checked. If
979 the option is off, all moves are accepted, but if a local chess engine
980 or the ICS is active, they will still reject illegal moves. Turning
981 off this option is useful if you are playing a chess variant with
982 rules that XBoard does not understand. (Bughouse, suicide, and wild
983 variants where the king may castle after starting on the d file are
984 generally supported with Test Legality on.)
985 <dt>Flash Moves<dt>Flash Rate<dd><a name="index-Flash-Moves_002c-Menu-Item-116"></a><a name="index-Flash-Rate_002c-Menu-Item-117"></a>If this option is non-zero, whenever a move is completed,
986 the moved piece flashes the specified number of times.
987 The flash-rate setting determines how rapidly this flashing occurs.
988 <dt>Animation Speed<dd><a name="index-Animation-Speed_002c-Menu-Item-118"></a>Determines the duration (in msec) of an animation step,
989 when ‘<samp><span class="samp">Animate Moving</span></samp>’ is swiched on.
990 <dt>Zoom factor in Evaluation Graph<dd><a name="index-Zoom-factor-in-Evaluation-Graph_002c-Menu-Item-119"></a>Sets the valueof the <code>evalZoom</code> option,
991 indicating the factor by which the score interval (-1,1) should be
992 blown up on the vertical axis of the Evaluation Graph.
993 <br><dt>Time Control<dd><a name="index-Time-Control_002c-Menu-Item-120"></a>Pops up a sub-menu where you can set the time-control parameters interactively.
994 Allows you to select classical or incremental time controls,
995 set the moves per session, session duration, and time increment.
996 Also allows specification of time-odds factors for one or both engines.
997 If an engine is given a time-odds factor N, all time quota it gets,
998 be it at the beginning of a session or through the time increment or
999 fixed time per move, will be divided by N.
1000 The shifted <kbd>Alt+T</kbd> key is a keyboard equivalent.
1001 <br><dt>Common Engine<dd><a name="index-Common-Engine_002c-Menu-Item-121"></a>Pops up a sub-menu where you can set some engine parameters common to most engines,
1002 such as hash-table size, tablebase cache size, maximum number of processors
1003 that SMP engines can use, and where to find the Polyglot adapter needed
1004 to run UCI engines under XBoard. The feature that allows setting of these parameters on
1005 engines is new since XBoard 4.3.15, so not many XBoard/WinBoard engines respond
1006 to it yet, but UCI engines should.
1008 <p>It is also possible to specify a GUI opening book here, i.e. an opening
1009 book that XBoard consults for any position a playing engine gets in.
1010 It then forces the engine to play the book move, rather than to think up its own,
1011 if that position is found in the book.
1012 The book can switched on and off independently for either engine.
1013 The way book moves are chosen can be influenced through the settings of
1014 book depth and variety.
1015 After both sides have played more moves than the specified depth,
1016 the book will no longer be consulted.
1017 When the variety is set to 50, moves will be played with the probability
1018 specified in the book.
1019 When set to 0, only the move(s) with the highest probability will be played.
1020 When set to 100, all listed moves will be played with equal pobability.
1021 Other settings interpolate between that.
1022 The shifted <kbd>Alt+U</kbd> key is a keyboard equivalent.
1023 <br><dt>Adjudications<dd><a name="index-Adjudications_002c-Menu-Item-122"></a>Pops up a sub-menu where you can enable or disable various adjudications
1024 that XBoard can perform in engine-engine games.
1025 The shifted <kbd>Alt+J</kbd> key is a keyboard equivalent.
1026 You can instruct XBoard to detect and terminate the game on checkmate
1027 or stalemate, even if the engines would not do so, to verify engine
1028 result claims (forfeiting engines that make false claims), rather than
1029 naively following the engine, to declare draw on positions
1030 which can never be won for lack of mating material, (e.g. KBK),
1031 or which are impossible to win unless the opponent seeks its own demise
1033 For these adjudications to work, ‘<samp><span class="samp">Test Legality</span></samp>’ should be switched on.
1034 It is also possible to instruct XBoard to enforce a 50-move or 3-fold-repeat
1035 rule and automatically declare draw (after a user-adjustable number of moves
1036 or repeats) even if the engines are prepared to go on.
1037 It is also possible to have XBoard declare draw on games that seem to drag on
1038 forever, or adjudicate a loss if both engines agree (for 3 consecutive moves) that one
1039 of them is behind more than a user-adjustable score threshold.
1040 For the latter adjudication to work, XBoard should be able to properly understand
1041 the engine's scores. To facilitate the latter, you can inform xboard here if
1042 the engines report scores from the viewpoint of white, or from that of their own color.
1044 <br><dt>ICS Options<dd><a name="index-ICS-Options_002c-Menu-Item-123"></a>The following options occur in a dialog summoned by the
1045 ICS Options menu item.
1046 <dt>Auto Kibitz<dd><a name="index-Auto-Kibitz_002c-Menu-Item-124"></a>Setting this option when playing with or aginst a chess program on an ICS
1047 will cause the last line of thinking output of the engine before its move
1048 to be sent to the ICS in a kibitz command.
1049 In addition, any kibitz message received through the ICS from
1050 an opponent chess program will be diverted to the engine-output window,
1051 (and suppressed in the console),
1052 where you can play through its PV by right-clicking it.
1053 <dt>Auto Comment<dd><a name="index-Auto-Comment_002c-Menu-Item-125"></a>If this option is on, any remarks made on ICS while you are observing or
1054 playing a game are recorded as a comment on the current move. This includes
1055 remarks made with the ICS commands <kbd>say</kbd>, <kbd>tell</kbd>, <kbd>whisper</kbd>,
1056 and <kbd>kibitz</kbd>.
1057 Limitation: remarks that you type yourself are not recognized;
1058 XBoard scans only the output from ICS, not the input you type to it.
1059 <dt>Auto Observe<dd><a name="index-Auto-Observe_002c-Menu-Item-126"></a>If this option is on and you add a player to your <code>gnotify</code>
1060 list on ICS, XBoard will automatically observe all of that
1061 player's games, unless you are doing something else (such as
1062 observing or playing a game of your own) when one starts.
1063 The games are displayed
1064 from the point of view of the player on your gnotify list; that is, his
1065 pawns move from the bottom of the window towards the top.
1066 Exceptions: If both players in a game are on your gnotify list, if
1068 <code>highlight</code>
1069 variable is set to 0, or if the ICS you are using does not
1070 properly support observing from Black's point of view,
1071 you will see the game from White's point of view.
1072 <dt>Auto Raise Board<dd><a name="index-Auto-Raise-Board_002c-Menu-Item-127"></a>If this option is on, whenever a new game begins, the chessboard window
1073 is deiconized (if necessary) and raised to the top of the stack of windows.
1074 <dt>Auto Save<dd><a name="index-Auto-Save_002c-Menu-Item-128"></a>If this option is true, at the end of every game XBoard prompts
1075 you for a file name and appends a record of the game to the file
1077 Disabled if the <code>saveGameFile</code> command-line
1078 option is set, as in that case all games are saved to the specified file.
1079 See <a href="#Load-and-Save-options">Load and Save options</a>.
1080 <dt>Background Observe<dd><a name="index-Background-Observe_002c-Menu-Item-129"></a>Setting this option will make XBoard suppress display of any boards
1081 from observed games while you are playing.
1082 In stead the last such board will be remembered,
1083 and shown to you when you right-click the board.
1084 This allows you to peek at your bughouse partner's game when you want,
1085 without disturbing your own game too much.
1086 <dt>Dual Board<dd><a name="index-Dual-Board_002c-Menu-Item-130"></a>Setting this option in combination with ‘<samp><span class="samp">Background Observe</span></samp>’
1087 will display boards of observed games while you are playing
1088 on a second board next to that of your own game.
1089 <dt>Get Move List<dd><a name="index-Get-Move-List_002c-Menu-Item-131"></a>If this option is on, whenever XBoard
1090 receives the first board of a new ICS game (or a different game from
1091 the one it is currently displaying), it
1092 retrieves the list of past moves from the ICS.
1093 You can then review the moves with the ‘<samp><span class="samp">Forward</span></samp>’ and ‘<samp><span class="samp">Backward</span></samp>’
1095 or save them with ‘<samp><span class="samp">Save Game</span></samp>’. You might want to
1096 turn off this option if you are observing several blitz games at once,
1097 to keep from wasting time and network bandwidth fetching the move lists over
1099 When you turn this option on from the menu, XBoard
1100 immediately fetches the move list of the current game (if any).
1101 <dt>Quiet Play<dd><a name="index-Quiet-Play_002c-Menu-Item-132"></a>If this option is on, XBoard will automatically issue an ICS
1102 <kbd>set shout 0</kbd>
1103 command whenever you start a game and a
1104 <kbd>set shout 1</kbd>
1105 command whenever you finish one. Thus, you will not be distracted
1106 by shouts from other ICS users while playing.
1107 <dt>Seek Graph<dd><a name="index-Seek-Graph_002c-Menu-Item-133"></a>Setting this option will cause XBoard to display an graph of
1108 currently active seek ads when you left-click the board
1109 while idle and logged on to an ICS.
1110 <dt>Auto-Refresh Seek Graph<dd><a name="index-Auto_002dRefresh-Seek-Graph_002c-Menu-Item-134"></a>In combination with the ‘<samp><span class="samp">Seek Graph</span></samp>’ option this
1111 will cause automatic update of the seek graph while it is up.
1112 This only works on FICS and ICC,
1113 and requires a lot of bandwidth on a busy server.
1114 <dt>Premove<dt>Premove White<dt>Premove Black<dt>First White Move<dt>First Black Move<dd><a name="index-Premove_002c-Menu-Item-135"></a><a name="index-Premove-White_002c-Menu-Item-136"></a><a name="index-Premove-Black_002c-Menu-Item-137"></a><a name="index-First-White-Move_002c-Menu-Item-138"></a><a name="index-First-Black-Move_002c-Menu-Item-139"></a>If this option is on while playing a game on an ICS, you can register
1115 your next planned move before it is your turn. Move the piece with
1116 the mouse in the ordinary way, and the starting and ending squares
1117 will be highlighted with a special color (red by default). When it is
1118 your turn, if your registered move is legal, XBoard will send it to
1119 ICS immediately; if not, it will be ignored and you can make a
1120 different move. If you change your mind about your premove, either
1121 make a different move, or double-click on any piece to cancel the move
1124 <p>You can also enter premoves for the first white and black moves
1126 <dt>ICS Alarm<dt>ICS Alarm Time<dd><a name="index-ICS-Alarm_002c-Menu-Item-140"></a><a name="index-ICS-Alarm-Time_002c-Menu-Item-141"></a>When this option is on, an alarm sound is played when your clock
1127 counts down to the icsAlarmTime in an ICS game.
1128 (By default, the time is 5 seconds, but you can pecify other values
1129 with the Alarm Time spin control.)
1130 For games with time controls that include an increment, the
1131 alarm will sound each time the clock counts down to the icsAlarmTime.
1132 By default, the alarm sound is the terminal bell, but on some systems
1133 you can change it to a sound file using the soundIcsAlarm option; see
1135 <dt>Colorize Messages<dd><a name="index-Colorize-Messages_002c-Menu-Item-142"></a>Ticking this options causes various types of ICS messages do be
1136 displayed with different foreground or background colors in the console.
1137 The colors can be individually selected for each type,
1138 through the accompanying text edits.
1140 <br><dt>Match Options<dd><a name="index-Match-Options_002c-Menu-Item-143"></a>Summons a dialog where you can set options important for playing automatic
1141 matches between two chess programs
1142 (e.g. by using the ‘<samp><span class="samp">Machine Match</span></samp>’ menu item in the ‘<samp><span class="samp">Mode</span></samp>’ menu).
1143 <dt>Tournament file<dd><a name="index-Tournament-file_002c-Menu-item-144"></a>To run a tournament, XBoard needs a file to record its progress,
1144 so it can resume the tourney when it is interrupted.
1145 When you want to conduct anything more complex than a simple
1146 two-player match with the currently loaded engines,
1147 (i.e. when you select a list of participants),
1148 you must not leave this field blank.
1149 When you enter the name of an existing tournament file,
1150 XBoard will ignore all other input specified in the dialog,
1151 and will take them from that tournament file.
1152 This resumes an interrupted tournament, or adds another XBoard
1153 agent playing games for it to those that are already doing so.
1154 Specifying a not-yet-existing file will cause XBoard to create it,
1155 according to the tournament parameters specified in the rest of the dialog,
1156 before it starts the tournament on ‘OK’.
1157 Provided that you specify participants;
1158 without participants no tournament file will be made, but other entered values
1159 (e.g. for the file with opening positions) will take effect.
1160 Default: configured by the <code>defaultTourneyName</code> option.
1161 <dt>Sync after round<dt>Sync after cycle<dd><a name="index-Sync-after-round_002c-Menu-Item-145"></a><a name="index-Sync-after-cycle_002c-Menu-Item-146"></a>The sync options, when on, will cause WinBoard to refrain from starting games
1162 of the next round or cycle before all games of the previous round or cycle are finished.
1163 This guarantees correct ordering in the games file,
1164 even when multiple XBoard instances are concurrently playing games for the same tourney.
1165 Default: sync after cycle, but not after round.
1166 <dt>Select Engine<dt>Tourney participants<dd><a name="index-Select-Engine_002c-Menu-Item-147"></a><a name="index-Tourney-participants_002c-Menu-Item-148"></a>With the Select Engine drop-down list you can pick an engine from your list
1167 of installed engines in the settings file, to be added to the tournament.
1168 The engines selected so far will be listed in the ‘Tourney participants’ memo.
1169 The latter is a normal text edit, so you can use normal text-editing functions
1170 to delete engines you selected by accident, or change their order.
1171 Do not type names yourself there, because names that do not exactly match
1172 one of the names from the drop-down list will lead to undefined behavior.
1173 <dt>Tourney type<dd><a name="index-Tourney-type_002c-Menu-Item-149"></a>Here you can specify the type of tournament you want.
1174 XBoard’s intrinsic tournament manager support round-robins (type = 0),
1175 where each participant plays every other participant, and (multi-)gauntlets,
1176 where one (or a few) so-called ‘gauntlet engines’ play an independent set of opponents.
1177 In the latter case, you specify the number of gauntlet engines.
1178 E.g. if you specified 10 engines, and tourney type = 2,
1179 the first 2 engines each play the remaining 8.
1180 A value of -1 instructs XBoard to play Swiss; for this to work an external
1181 pairing engine must be specified through the <code>pairingEngine</code> option.
1182 Each Swiss round will be considered a tourney cycle in that case.
1184 <dt>Number of tourney cycles<dt>Default number of Games<dd><a name="index-Number-of-tourney-cycles_002c-Menu-Item-150"></a><a name="index-Default-number-of-Games_002c-Menu-Item-151"></a>You can specify tourneys where every two opponents play each other multiple times.
1185 Such multiple games can be played in a row,
1186 as specified by the ‘number of games per pairing’,
1187 or by repeating the entire tournament schedule a number of times
1188 (specified by the ‘number of tourney cycles’).
1189 The total number of times two engine meet will be the product of these two.
1191 the number of games per pairing is the same as the default number of match games,
1192 stored in your settings file through the <code>defaultMatchGames</code> option.
1193 <dt>Save Tourney Games<dd><a name="index-Save-Tourney-Games_002c-Menu-Item-152"></a>File where the tournament games are saved
1194 (duplicate of the item in the ‘<samp><span class="samp">Save Game Options</span></samp>’).
1195 <dt>Game File with Opening Lines<dt>File with Start Positions<dt>Game Number<dt>Position Number<dt>Rewind Index after<dd><a name="index-Game-File-with-Opening-Lines_002c-Menu-Item-153"></a><a name="index-File-with-Start-Positions_002c-Menu-Item-154"></a><a name="index-Game-Number_002c-Menu-Item-155"></a><a name="index-Position-Number_002c-Menu-Item-156"></a><a name="index-Rewind-Index-after_002c-Menu-Item-157"></a>These items optionally specify the file with move sequences or board positions the tourney
1196 games should start from.
1197 The corresponding numbers specify the number of the game or position in the file.
1198 Here a value -1 means automatic stepping through all games on the file,
1199 -2 automatic stepping every two games.
1200 The Rewind-Index parameter causes a stepping index to reset to one after reaching
1202 A setting of -2 for the game number will also be effective in a tournament without
1203 specifying a game file, but playing from the GUI book instead.
1204 In this case the first (odd) games will randomly select from the book,
1205 but the second (even) games will select the same moves from the book as the previous game.
1206 (Note this leads to the same opening only if both engines use the GUI book!)
1207 Default: No game or position file will be used. The default index if such a file is used is 1.
1208 <dt>Disable own engine bools be default<dd><a name="index-Disable-own-engine-bools-be-default_002c-Menu-Item-158"></a>Setting this option reverses the default situation for use of the GUI opening book
1209 in tournaments from what it normally is, namely not using it.
1210 So unless the engine is installed with an option to explicitly specify it should
1211 not use the GUI book (i.e. <code>-firstHasOwnBookUCI true</code>),
1212 it will be made to use the GUI book.
1213 <dt>Replace Engine<dt>Upgrade Engine<dd><a name="index-Replace-Engine_002c-Menu-Item-159"></a><a name="index-Upgrade-Engine_002c-Menu-Item-160"></a>With these two buttons you can alter the participants of an already running tournament.
1214 After opening the Match Options dialog on an XBoard that is playing for the tourney,
1215 you will see all the tourney parameters in the dialog fields.
1216 You can then replace the name of one engine by that of another
1217 by editing the ‘<samp><span class="samp">participants</span></samp>’ field.
1218 (But preserve the order of the others!)
1219 Pressing the button after that will cause the substitution.
1220 With the ‘<samp><span class="samp">Upgrade Engine</span></samp>’ button the substitution will only affect future games.
1221 With ‘<samp><span class="samp">Replace Engine</span></samp>’ all games the substituted engine has already played will
1222 be invalidated, and they will be replayed with the substitute engine.
1223 In this latter case the engine must not be playing when you do this,
1224 but otherwise there is no need to pause the tournament play
1225 for making a substitution.
1226 <dt>Clone Tourney<dd><a name="index-CloneTourney_002c-Menu-Item-161"></a>Pressing this button after you have specified an existing tournament file
1227 will copy the contents of the latter to the dialog,
1228 and then puts the originally proposed name for the tourney file back.
1229 You can then run a tourney with the same parameters
1230 (possibly after changing the proposed name of the tourney file for the new tourney)
1233 <br><dt>Load Game Options<dd><a name="index-Load-Game-Options_002c-Menu-Item-162"></a>Summons a dialog where you can set the <code>autoDisplayComment</code> and
1234 <code>autoDisplayTags</code> options, (which control popups when viewing loaded games),
1235 and specify the rate at which loaded games are auto-played,
1236 in seconds per move (which can be a fractional number, like 1.6).
1237 You can also set search criteria for determining which games
1238 will be displayed in the Game List for a multi-game file,
1239 and thus be eligible for loading:
1240 <dt>Elo of strongest player<dt>Elo of weakest player<dt>year<dd><a name="index-Elo-of-strongest-player_002c-Menu-Item-163"></a><a name="index-Elo-of-weakest-player_002c-Menu-Item-164"></a><a name="index-year_002c-Menu-Item-165"></a>These numeric fields set thresholds (lower limits) on the Elo rating of the mentioned player,
1241 or the date the game was played.
1243 <dt>Search mode<dd><a name="index-Search-mode_002c-Menu-Item-166"></a><a name="index-find-position_002c-Menu-Item-167"></a>This setting determines which positions in a game will be considered a match
1244 to the position currently displayed in the board window
1245 when you press the ‘<samp><span class="samp">find position</span></samp>’ button in the Game List.
1246 You can search for an exact match,
1247 a position that has all shown material in the same place,
1248 but might contain additional material,
1249 a position that has all Pawns in the same place,
1250 but can have the shown material anywhere,
1251 a position that can have all shown material anywhere,
1252 or a position that has material between certain limits anywhere.
1253 For the latter you have to place the material that must be present
1254 in the four lowest ranks of the board,
1255 and optional additional material in the four highest ranks of the board.
1256 You can request the optional material to be balanced.
1257 <dt>number of consecutive positions<dd><a name="index-number-of-consecutive-positions_002c-Menu-Item-168"></a>When you are searching by material, rather than for an exact match,
1258 this parameter indicates forhowmany consecutive game positions
1259 the same amount of material must be on the board before it is
1261 <dt>Also match reversed colors<dt>Also match left-right flipped position<dd><a name="index-Also-match-reversed-colors_002c-Menu-Item-169"></a><a name="index-Also-match-left_002dright-flipped-position_002c-Menu-Item-170"></a>When looking for matching positions rather than by material,
1262 these settings determine whether mirror images
1263 (in case of a vertical flip in combination with color reversal)
1264 will be also considered a match.
1265 The left-right flipping is only useful after all castling rights
1266 have expired (or in Xiangqi).
1268 <br><dt>Save Game Options<dd><a name="index-Save-Game-Options_002c-Menu-Item-171"></a>Summons a dialog where you can specify the files on which XBoard should
1269 automtically save any played or entered games,
1270 (the <code>saveGameFile</code> option),
1271 or the final position of such games (the <code>savePositionfile</code> option).
1272 You can also select 'auto-save' without a file name,
1273 in which case XBoard will prompt the user for a file name after each game.
1274 You can also set the default value for the PGN Event tag that will
1275 be used for each new game you start.
1276 Various options for the format of the game can be specified as well,
1277 such as whether scores and depths of engine games should be saved as comments,
1278 and if a tag with info about the score with which the engine came out of book
1280 For Chess, always set the format to PGN, rather than "old save stye"!
1282 <br><dt>Game List<dd><a name="index-Game-List-Tags_002c-Menu-Item-172"></a>Pops up a dialog where you can select the PGN tags that should appear
1283 on the lines in the game list, and their order.
1285 <br><dt>Sound Options<dd><a name="index-Sound-Options_002c-Menu-Item-173"></a>Summons a dialog where you can specify the sounds that should accompany
1286 various events that can occur XBoard.
1287 Most events are only relevant to ICS play,
1288 but the move sound is an important exception.
1289 For each event listed in the dialog,
1290 you can select a standard sound from a menu.
1291 You can also select a user-supplied sound file,
1292 by typing its name into the designated text-edit field first,
1293 and then selecting "Above WAV File" from the menu for the event.
1294 A dummy event has been provided for trying out the sounds with the
1295 "play" button next to it.
1296 The directory with standard sounds, and the external program for playing
1297 the sounds can be specified too, but normally you would not touch these
1298 once XBoard is properly installed.
1299 When a move sound other than 'None' is selected,
1300 XBoard alerts you by playing that sound
1301 after each of your opponent's moves (or after every
1302 move if you are observing a game on the Internet Chess Server).
1303 The sound is not played after moves you make or moves read from a
1306 <br><dt>Save Settings Now<dd><a name="index-Save-Settings-Now_002c-Menu-Item-174"></a>Selecting this menu item causes the current XBoard settings to be
1307 written to the settings file, so they will also apply in future sessions.
1308 Note that some settings are 'volatile', and are not saved,
1309 because XBoard considers it too unlikely that you want those to apply
1311 In particular this applies to the Chess program names, and all options
1312 giving information on those Chess programs (such as their directory,
1313 if they have their own opening book, if they are UCI or native XBoard),
1314 or the variant you are playing.
1315 Such options would still be understood when they appear in the settings
1316 file in case they were put there with the aid of a text editor, but they
1317 would disappear from the file as soon as you save the settings.
1318 <br><dt>Save Settings on Exit<dd><a name="index-Save-Settings-on-Exit_002c-Menu-Item-175"></a>Setting this option has no immediate effect, but causes the settings
1319 to be saved when you quit XBoard. What happens then is otherwise
1320 identical to what happens when you use select "Save Settings Now",
1325 <a name="Help-Menu"></a>
1327 Next: <a rel="next" accesskey="n" href="#Keys">Keys</a>,
1328 Previous: <a rel="previous" accesskey="p" href="#Options-Menu">Options Menu</a>,
1329 Up: <a rel="up" accesskey="u" href="#Menus">Menus</a>
1333 <h3 class="section">3.8 Help Menu</h3>
1335 <p><a name="index-Menu_002c-Help-176"></a><a name="index-Help-Menu-177"></a>
1337 <dt>Info XBoard<dd><a name="index-Info-XBoard_002c-Menu-Item-178"></a>Displays the XBoard documentation in info format. For this feature to
1338 work, you must have the GNU info program installed on your system, and
1339 the file <samp><span class="file">xboard.info</span></samp> must either be present in the current
1340 working directory, or have been installed by the ‘<samp><span class="samp">make install</span></samp>’
1341 command when you built XBoard.
1342 <br><dt>Man XBoard<dd><a name="index-Man-XBoard_002c-Menu-Item-179"></a>Displays the XBoard documentation in man page format.
1343 The <kbd>F1</kbd> key is a keyboard equivalent. For this
1344 feature to work, the file <samp><span class="file">xboard.6</span></samp> must have been installed by
1345 the ‘<samp><span class="samp">make install</span></samp>’ command when you built XBoard, and the
1346 directory it was placed in must be on the search path for your
1347 system's ‘<samp><span class="samp">man</span></samp>’ command.
1348 <br><dt>About XBoard<dd><a name="index-About-XBoard_002c-Menu-Item-180"></a>Shows the current XBoard version number.
1354 Previous: <a rel="previous" accesskey="p" href="#Help-Menu">Help Menu</a>,
1355 Up: <a rel="up" accesskey="u" href="#Menus">Menus</a>
1359 <h3 class="section">3.9 Other Shortcut Keys</h3>
1361 <p><a name="index-Keys-181"></a><a name="index-Shortcut-keys-182"></a>
1363 <dt>Show Last Move<dd><a name="index-Show-Last-Move_002c-Shortcut-Key-183"></a>By hitting <kbd>Enter</kbd> the last move will be re-animated.
1364 <br><dt>Load Next Game<dd><a name="index-Load-Next-Game_002c-Menu-Item-184"></a>Loads the next game from the last game record file you loaded.
1365 The <kbd>Alt+PgDn</kbd> key triggers this action.
1366 <br><dt>Load Previous Game<dd><a name="index-Load-Previous-Game_002c-Menu-Item-185"></a>Loads the previous game from the last game record file you
1367 loaded. The <kbd>Alt+PgUp</kbd> key triggers this action.
1368 Not available if the last game was loaded from a pipe.
1369 <br><dt>Reload Same Game<dd><a name="index-Reload-Same-Game_002c-Menu-Item-186"></a>Reloads the last game you loaded.
1370 Not available if the last game was loaded from a pipe.
1371 Currently no keystroke is assigned to this ReloadGameProc.
1372 <br><dt>Reload Same Position<dd><a name="index-Reload-Same-Position_002c-Menu-Item-187"></a>Reloads the last position you loaded.
1373 Not available if the last position was loaded from a pipe.
1374 Currently no keystroke is assigned to this ReloadPositionProc.
1377 <p>You can add or remove shortcut keys using the X resources
1378 <code>form.translations</code>. Here is an example of what would go in your
1379 <samp><span class="file">.Xresources</span></samp> file:
1381 <pre class="example"> XBoard*form.translations: \
1382 Shift<Key>?: AboutGameProc() \n\
1383 <Key>y: AcceptProc() \n\
1384 <Key>n: DeclineProc() \n\
1385 <Key>i: NothingProc()
1387 <p class="noindent">Binding a key to <code>NothingProc</code> makes it do nothing, thus removing
1388 it as a shortcut key. The XBoard commands that can be bound to keys
1391 <pre class="example"> AbortProc, AboutGameProc, AboutProc, AcceptProc, AdjournProc,
1392 AlwaysQueenProc, AnalysisModeProc, AnalyzeFileProc,
1393 AnimateDraggingProc, AnimateMovingProc, AutobsProc, AutoflagProc,
1394 AutoflipProc, AutoraiseProc, AutosaveProc, BackwardProc,
1395 BlindfoldProc, BookProc, CallFlagProc, CopyGameProc, CopyPositionProc,
1396 DebugProc, DeclineProc, DrawProc, EditCommentProc, EditGameProc,
1397 EditPositionProc, EditTagsProc, EnterKeyProc, FlashMovesProc,
1398 FlipViewProc, ForwardProc, GetMoveListProc, HighlightLastMoveProc,
1399 HintProc, IcsAlarmProc, IcsClientProc, IcsInputBoxProc,
1400 InfoProc, LoadGameProc, LoadNextGameProc, LoadNextPositionProc,
1401 LoadPositionProc, LoadPrevGameProc, LoadPrevPositionProc,
1402 LoadSelectedProc, MachineBlackProc, MachineWhiteProc, MailMoveProc,
1403 ManProc, MoveNowProc, MoveSoundProc, NothingProc, OldSaveStyleProc,
1404 PasteGameProc, PastePositionProc, PauseProc, PeriodicUpdatesProc,
1405 PonderNextMoveProc, PopupExitMessageProc, PopupMoveErrorsProc,
1406 PremoveProc, QuietPlayProc, QuitProc, ReloadCmailMsgProc,
1407 ReloadGameProc, ReloadPositionProc, RematchProc, ResetProc,
1408 ResignProc, RetractMoveProc, RevertProc, SaveGameProc,
1409 SavePositionProc, ShowCoordsProc, ShowGameListProc, ShowThinkingProc,
1410 StopExaminingProc, StopObservingProc, TestLegalityProc, ToEndProc,
1411 ToStartProc, TrainingProc, TruncateGameProc, and TwoMachinesProc.
1414 <a name="Options"></a>
1416 Next: <a rel="next" accesskey="n" href="#Chess-Servers">Chess Servers</a>,
1417 Previous: <a rel="previous" accesskey="p" href="#Menus">Menus</a>,
1418 Up: <a rel="up" accesskey="u" href="#Top">Top</a>
1422 <h2 class="chapter">4 Options</h2>
1424 <p><a name="index-Options-188"></a><a name="index-Options-189"></a>
1425 This section documents the command-line options to XBoard. You can
1426 set these options in two ways: by typing them on the shell command
1427 line you use to start XBoard, or by editing the settings file
1428 (usually ~/.xboardrc) to alter the value of the setting that was
1429 saved there. Some of the options
1430 cannot be changed while XBoard is running; others set the initial
1431 state of items that can be changed with the <a href="#Options">Options</a> menu.
1433 <p>Most of the options have both a long name and a short name. To turn a
1434 boolean option on or off from the command line, either give its long
1435 name followed by the value true or false
1436 (‘<samp><span class="samp">-longOptionName true</span></samp>’), or give just the short name to turn the
1437 option on (‘<samp><span class="samp">-opt</span></samp>’), or the short name preceded by ‘<samp><span class="samp">x</span></samp>’ to
1438 turn the option off (‘<samp><span class="samp">-xopt</span></samp>’). For options that take strings or
1439 numbers as values, you can use the long or short option names
1443 <li><a accesskey="1" href="#Chess-engine-options">Chess engine options</a>: Controlling the chess engine.
1444 <li><a accesskey="2" href="#UCI-_002b-WB-Engine-Settings">UCI + WB Engine Settings</a>: Setting some very common engine parameters
1445 <li><a accesskey="3" href="#Tournament-options">Tournament options</a>: Running tournaments and matches between engines.
1446 <li><a accesskey="4" href="#ICS-options">ICS options</a>: Connecting to and using ICS.
1447 <li><a accesskey="5" href="#Load-and-Save-options">Load and Save options</a>: Input/output options.
1448 <li><a accesskey="6" href="#User-interface-options">User interface options</a>: Look and feel options.
1449 <li><a accesskey="7" href="#Adjudication-Options">Adjudication Options</a>: Control adjudication of engine-engine games.
1450 <li><a accesskey="8" href="#Other-options">Other options</a>: Miscellaneous.
1454 <a name="Chess-engine-options"></a>
1456 Next: <a rel="next" accesskey="n" href="#UCI-_002b-WB-Engine-Settings">UCI + WB Engine Settings</a>,
1457 Up: <a rel="up" accesskey="u" href="#Options">Options</a>
1461 <h3 class="section">4.1 Chess Engine Options</h3>
1463 <p><a name="index-options_002c-Chess-engine-190"></a><a name="index-Chess-engine-options-191"></a>
1465 <dt>-tc or -timeControl minutes[:seconds]<dd><a name="index-tc_002c-option-192"></a><a name="index-timeControl_002c-option-193"></a>Each player begins with his clock set to the <code>timeControl</code> period.
1467 The additional options <code>movesPerSession</code> and <code>timeIncrement</code>
1468 are mutually exclusive.
1469 <br><dt>-mps or -movesPerSession moves<dd><a name="index-mps_002c-option-194"></a><a name="index-movesPerSession_002c-option-195"></a>When both players have made <code>movesPerSession</code> moves, a
1470 new <code>timeControl</code> period is added to both clocks. Default: 40 moves.
1471 <br><dt>-inc or -timeIncrement seconds<dd><a name="index-inc_002c-option-196"></a><a name="index-timeIncrement_002c-option-197"></a>If this option is specified, <code>movesPerSession</code> is ignored.
1472 Instead, after each player's move, <code>timeIncrement</code> seconds are
1474 Use ‘<samp><span class="samp">-inc 0</span></samp>’ if you want to require the entire
1475 game to be played in one <code>timeControl</code> period, with no increment.
1476 Default: -1, which specifies <code>movesPerSession</code> mode.
1477 <br><dt>-clock/-xclock or -clockMode true/false<dd><a name="index-clock_002c-option-198"></a><a name="index-clockMode_002c-option-199"></a>Determines whether or not to display the chess clocks. If clockMode is
1478 false, the clocks are not shown, but the side that is to play next
1479 is still highlighted. Also, unless <code>searchTime</code>
1480 is set, the chess engine still keeps track of the clock time and uses it to
1481 determine how fast to make its moves.
1482 <br><dt>-st or -searchTime minutes[:seconds]<dd><a name="index-st_002c-option-200"></a><a name="index-searchTime_002c-option-201"></a>Tells the chess engine to spend at most the given amount of time
1483 searching for each of its moves. Without this option, the chess engine
1484 chooses its search time based on the number of moves and amount
1485 of time remaining until the next time control.
1486 Setting this option also sets clockMode to false.
1487 <br><dt>-depth or -searchDepth number<dd><a name="index-sd_002c-option-202"></a><a name="index-searchDepth_002c-option-203"></a>Tells the chess engine to look ahead at most the given number of moves
1488 when searching for a move to make. Without this option, the chess
1489 engine chooses its search depth based on the number of moves and
1490 amount of time remaining until the next time control. With the option,
1491 the engine will cut off its search early if it reaches the specified depth.
1492 <br><dt>-firstNPS number<dt>-secondNPS number<dd><a name="index-firstNPS_002c-option-204"></a><a name="index-secondNPS_002c-option-205"></a>Tells the chess engine to use an internal time standard based on its node count,
1493 rather then wall-clock time, to make its timing decisions.
1494 The time in virtual seconds should be obtained by dividing the node count
1495 through the given number, like the number was a rate in nodes per second.
1496 Xboard will manage the clocks in accordance with this, relying on the number
1497 of nodes reported by the engine in its thinking output. If the given number equals zero,
1498 it can obviously not be used to convert nodes to seconds, and the time reported
1499 by the engine is used to decrement the XBoard clock in stead. The engine is supposed to
1500 report in CPU time it uses, rather than wall-clock time, in this mode. This option
1501 can provide fairer conditions for engine-engine matches on heavily loaded machines,
1502 or with very fast games (where the wall clock is too inaccurate).
1503 <code>showThinking</code> must be on for this option to work. Default: -1 (off).
1504 Not many engines might support this yet!
1505 <br><dt>-firstTimeOdds factor<dt>-secondTimeOdds factor<dd><a name="index-firstTimeOdds_002c-option-206"></a><a name="index-secondTimeOdds_002c-option-207"></a>Reduces the time given to the mentioned engine by the given factor.
1506 If pondering is off, the effect is indistinguishable from what would happen
1507 if the engine was running on an n-times slower machine. Default: 1.
1508 <br><dt>-timeOddsMode mode<dd><a name="index-timeOddsMode_002c-option-208"></a>This option determines how the case is handled where both engines have a time-odds handicap.
1509 If mode=1, the engine that gets the most time will always get the nominal time,
1510 as specified by the time-control options, and its opponent's time is renormalized accordingly.
1511 If mode=0, both play with reduced time. Default: 0.
1512 <br><dt>-hideThinkingFromHuman true/false<dd>Controls the Hide Thinking option. See <a href="#Options-Menu">Options Menu</a>. Default: true.
1513 (Replaces the Show-Thinking option of older xboard versions.)
1514 <br><dt>-thinking/-xthinking or -showThinking true/false<dd><a name="index-thinking_002c-option-209"></a><a name="index-showThinking_002c-option-210"></a>Forces the engine to send thinking output to xboard.
1515 Used to be the only way to control if thinking output was displayed
1516 in older xboard versions,
1517 but as the thinking output in xboard 4.3 is also used for several other
1518 purposes (adjudication, storing in PGN file) the display of it is now controlled
1519 by the new option Hide Thinking. See <a href="#Options-Menu">Options Menu</a>. Default: false.
1520 (But if xboard needs the thinking output for some purpose,
1521 it makes the engine send it despite the setting of this option.)
1522 <br><dt>-ponder/-xponder or -ponderNextMove true/false<dd><a name="index-ponder_002c-option-211"></a><a name="index-ponderNextMove_002c-option-212"></a>Sets the Ponder Next Move menu option. See <a href="#Options-Menu">Options Menu</a>. Default: true.
1523 <br><dt>-smpCores number<dd>Specifies the maximum number of CPUs an SMP engine is allowed to use.
1524 Only works for engines that support the XBoard/WinBoard-protocol cores feature.
1525 <br><dt>-mg or -matchGames n<dd><a name="index-mg_002c-option-213"></a><a name="index-matchGames_002c-option-214"></a>Automatically runs an n-game match between two chess engines,
1526 with alternating colors.
1527 If the <code>loadGameFile</code> or <code>loadPositionFile</code> option is set,
1529 starts each game with the given opening moves or the given position;
1530 otherwise, the games start with the standard initial chess position.
1531 If the <code>saveGameFile</code> option is set, a move record for the
1532 match is appended to the specified file. If the <code>savePositionFile</code>
1533 option is set, the final position reached in each game of the match is appended
1534 to the specified file. When the match is over, XBoard
1535 displays the match score and exits. Default: 0 (do not run a match).
1536 <br><dt>-mm/-xmm or -matchMode true/false<dd><a name="index-mm_002c-option-215"></a><a name="index-matchMode_002c-option-216"></a>Setting <code>matchMode</code> to true is equivalent to setting
1537 <code>matchGames</code> to 1.
1538 <br><dt>-sameColorGames n<dd><a name="index-sameColorGames_002c-option-217"></a>Automatically runs an n-game match between two chess engines,
1539 without alternating colors.
1540 Otherwise the same applies as for the ‘<samp><span class="samp">-matchGames</span></samp>’ option,
1541 over which it takes precedence if both are specified. (See there.)
1542 Default: 0 (do not run a match).
1543 <br><dt>-fcp or -firstChessProgram program<dd><a name="index-fcp_002c-option-218"></a><a name="index-firstChessProgram_002c-option-219"></a>Name of first chess engine.
1544 Default: <samp><span class="file">Fairy-Max</span></samp>.
1545 <br><dt>-scp or -secondChessProgram program<dd><a name="index-scp_002c-option-220"></a><a name="index-secondChessProgram_002c-option-221"></a>Name of second chess engine, if needed.
1546 A second chess engine is started only in Two Machines (match) mode.
1547 Default: <samp><span class="file">Fairy-Max</span></samp>.
1548 <br><dt>-fb/-xfb or -firstPlaysBlack true/false<dd><a name="index-fb_002c-option-222"></a><a name="index-firstPlaysBlack_002c-option-223"></a>In games between two chess engines, firstChessProgram normally plays
1549 white. If this option is true, firstChessProgram plays black. In a
1550 multi-game match, this option affects the colors only for the first
1551 game; they still alternate in subsequent games.
1552 <br><dt>-fh or -firstHost host<dt>-sh or -secondHost host<dd><a name="index-fh_002c-option-224"></a><a name="index-firstHost_002c-option-225"></a><a name="index-sh_002c-option-226"></a><a name="index-secondHost_002c-option-227"></a>Hosts on which the chess engines are to run. The default for
1553 each is <samp><span class="file">localhost</span></samp>. If you specify another host, XBoard
1554 uses <samp><span class="file">rsh</span></samp> to run the chess engine there. (You can substitute a
1555 different remote shell program for rsh using the <code>remoteShell</code>
1556 option described below.)
1557 <br><dt>-fd or -firstDirectory dir<dt>-sd or -secondDirectory dir<dd><a name="index-fd_002c-option-228"></a><a name="index-firstDirectory_002c-option-229"></a><a name="index-sd_002c-option-230"></a><a name="index-secondDirectory_002c-option-231"></a>Working directories in which the chess engines are to be run.
1558 The default is "", which means to run the chess engine
1559 in the same working directory as XBoard
1560 itself. (See the CHESSDIR environment variable.)
1561 This option is effective only when the chess engine is being run
1562 on the local host; it does not work if the engine is run remotely
1563 using the -fh or -sh option.
1564 <br><dt>-initString string or -firstInitString<dt>-secondInitString string<dd><a name="index-initString_002c-option-232"></a><a name="index-firstInitString_002c-option-233"></a><a name="index-secondInitString_002c-option-234"></a>The string that is sent to initialize each chess engine for a new game.
1567 <pre class="example"> new
1570 <p class="noindent">Setting this option from the command line is tricky, because you must
1571 type in real newline characters, including one at the very end.
1572 In most shells you can do this by
1573 entering a ‘<samp><span class="samp">\</span></samp>’ character followed by a newline. It is easier to set
1574 the option from your <samp><span class="file">.Xresources</span></samp> file; in that case you can
1575 include the character sequence ‘<samp><span class="samp">\n</span></samp>’ in the string, and it will
1576 be converted to a newline.
1578 <p>If you change this option, don't remove the ‘<samp><span class="samp">new</span></samp>’
1579 command; it is required by all chess engines to
1582 <p>You can remove the ‘<samp><span class="samp">random</span></samp>’ command if you like; including it
1583 causes GNU Chess 4 to randomize its move selection slightly so that it
1584 doesn't play the same moves in every game. Even without
1585 ‘<samp><span class="samp">random</span></samp>’, GNU Chess 4 randomizes its choice of moves from its
1586 opening book. Many other chess engines ignore this command entirely
1587 and always (or never) randomize.
1589 <p>You can also try adding other commands to the initString; see the
1590 documentation of the chess engine you are using for details.
1591 <br><dt>-firstComputerString string<dt>-secondComputerString string<dd><a name="index-firstComputerString_002c-option-235"></a><a name="index-secondComputerString_002c-option-236"></a>The string that is sent to the chess engine if its opponent is another
1592 computer chess engine. The default is ‘<samp><span class="samp">computer\n</span></samp>’. Probably the
1593 only useful alternative is the empty string (‘<samp></samp>’), which keeps the
1594 engine from knowing that it is playing another computer.
1595 <br><dt>-reuse/-xreuse or -reuseFirst true/false<dt>-reuse2/-xreuse2 or -reuseSecond true/false<dd><a name="index-reuse_002c-option-237"></a><a name="index-reuseFirst_002c-option-238"></a><a name="index-reuse2_002c-option-239"></a><a name="index-reuseSecond_002c-option-240"></a>If the option is false,
1596 XBoard kills off the chess engine after every game and starts
1597 it again for the next game.
1598 If the option is true (the default),
1599 XBoard starts the chess engine only once
1600 and uses it repeatedly to play multiple games.
1601 Some old chess engines may not work properly when
1602 reuse is turned on, but otherwise games will start faster if it is left on.
1603 <br><dt>-firstProtocolVersion version-number<dt>-secondProtocolVersion version-number<dd><a name="index-firstProtocolVersion_002c-option-241"></a><a name="index-secondProtocolVersion_002c-option-242"></a>This option specifies which version of the chess engine communication
1604 protocol to use. By default, version-number is 2. In version 1, the
1605 "protover" command is not sent to the engine; since version 1 is a
1606 subset of version 2, nothing else changes. Other values for
1607 version-number are not supported.
1608 <br><dt>-firstScoreAbs true/false<dt>-secondScoreAbs true/false<dd><a name="index-firstScoreAbs_002c-option-243"></a><a name="index-secondScoreAbs_002c-option-244"></a>If this option is set, the score reported by the engine is taken to be
1609 that in favor of white, even when the engine plays black.
1610 Important when XBoard uses the score for adjudications, or in PGN reporting.
1611 <br><dt>-niceEngines priority<dd><a name="index-niceEngines_002c-option-245"></a>This option allows you to lower the priority of the engine processes,
1612 so that the generally insatiable hunger for CPU time of chess engines does not interfere so much
1613 with smooth operation of XBoard (or the rest of your system).
1614 Negative values could increase the engine priority, which is not recommended.
1615 <br><dt>-firstOptions string<dt>-secondOptions string<dd><a name="index-firstOptions_002c-option-246"></a><a name="index-secondOptions_002c-option-247"></a>The given string is a comma-separated list of (option name=option value) pairs,
1616 like the following example: "style=Karpov,blunder rate=0".
1617 If an option announced by the engine at startup through the feature commands of the XBoard/WinBoard protocol
1618 matches one of the option names (i.e. "style" or "blunder rate"),
1619 it would be set to the given value (i.e. "Karpov" or 0)
1620 through a corresponding option command to the engine.
1621 This provided that the type of the value (text or numeric) matches as well.
1622 <br><dt>-firstNeedsNoncompliantFEN string<dt>-secondNeedsNoncompliantFEN string<dd><a name="index-firstNeedsNoncompliantFEN_002c-option-248"></a><a name="index-secondNeedsNoncompliantFEN_002c-option-249"></a>The castling rights and e.p. fields of the FEN sent to the mentioned engine
1623 with the setboard command will be replaced by the given string. This can for
1624 instance be used to run engines that do not understand Chess960 FENs in
1625 variant fischerandom, to make them at least understand the opening position,
1626 through setting the string to "KQkq -". (Note you also have to give the e.p. field!)
1627 Other possible applications are to provide work-arounds for engines that want to see
1628 castling and e.p. fields in variants that do not have castling or e.p.
1629 (shatranj, courier, xiangqi, shogi) so that XBoard would normally omit them
1630 (string = "- -"), or to add variant-specific fields that are not yet supported by XBoard
1631 (e.g. to indicate the number of checks in 3check).
1632 <br><dt>-shuffleOpenings<dd><a name="index-shuffleOpenings_002c-option-250"></a>Forces shuffling of the opening setup in variants that normally have a fixed initial position.
1633 Shufflings are symmetric for black and white, and exempt King and Rooks in variants
1634 with normal castling.
1635 Remains in force until a new variant is selected.
1639 <a name="UCI-+-WB-Engine-Settings"></a>
1640 <a name="UCI-_002b-WB-Engine-Settings"></a>
1642 Next: <a rel="next" accesskey="n" href="#Tournament-options">Tournament options</a>,
1643 Previous: <a rel="previous" accesskey="p" href="#Chess-engine-options">Chess engine options</a>,
1644 Up: <a rel="up" accesskey="u" href="#Options">Options</a>
1648 <h3 class="section">4.2 UCI + WB Engine Settings</h3>
1650 <p><a name="index-Engine-Settings-251"></a><a name="index-Settings_002c-Engine-252"></a>
1652 <dt>-fUCI or -firstIsUCI true/false<dt>-sUCI or -secondIsUCI true/false<dd><a name="index-fUCI_002c-option-253"></a><a name="index-sUCI_002c-option-254"></a><a name="index-firstIsUCI_002c-option-255"></a><a name="index-secondIsUCI_002c-option-256"></a>Indicates if the mentioned engine executable file is an UCI engine,
1653 and should be run with the aid of the Polyglot adapter rather than directly.
1654 Xboard will then pass the other UCI options and engine name to Polyglot
1655 on its command line, according to the option <code>adapterCommand</code>.
1656 <br><dt>-fUCCI<dt>-sUCCI<dt>-fUSI<dt>-sUSI<dd><a name="index-fUCCI_002c-option-257"></a><a name="index-sUCCI_002c-option-258"></a><a name="index-fUSI_002c-option-259"></a><a name="index-sUSI_002c-option-260"></a>Options similar to <code>fUCI</code> and <code>sUCI</code>, except that they
1657 use the indicated engine with the protocol adapter specified in
1658 the ‘<samp><span class="samp">uxiAdapter</span></samp>’ option.
1659 This can then be configured for running an UCCI or USI adapter,
1661 <br><dt>-adapterCommand string<dd><a name="index-adapterCommand_002c-option-261"></a>The string conatins the command that should be issued by XBoard
1662 to start an engine that is accompanied by the <code>fUCI</code> option.
1663 Any identifier following a percent sign in the command (e.g. %fcp)
1664 will be considered the name of an XBoard option, and be replaced
1665 by the value of that option at the time the engine is started.
1666 For starting the second engine, any leading "f" or "first" in
1667 the option name will first be replaced by "s" or "second",
1668 before finding its value.
1669 Default: 'polyglot -noini -ec "%fcp" -ed "%fd"'
1670 <br><dt>-uxiAdapter string<dd><a name="index-uxiAdapter_002c-option-262"></a>Similar to <code>adapterCommand</code>, but used for engines accompanied
1671 by the <code>fUCCI</code> or <code>fUSI</code> option, so you can configure
1672 XBoard to be ready to handle more than one flavor of non-native protocols.
1674 <br><dt>-polyglotDir filename<dd><a name="index-polyglotDir_002c-option-263"></a>Gives the name of the directory in which the Polyglot adapter for UCI engines resides.
1676 <br><dt>-usePolyglotBook true/false<dd><a name="index-usePolyglotBook_002c-option-264"></a>Specifies if the Polyglot book should be used as GUI book.
1677 <br><dt>-polyglotBook filename<dd><a name="index-polyglotBook_002c-option-265"></a>Gives the filename of the opening book.
1678 The book is only used when the <code>usePolyglotBook</code> option is set to true,
1679 and the option <code>firstHasOwnBookUCI</code> or <code>secondHasOwnBookUCI</code>
1680 applying to the engine is set to false.
1681 The engine will be kept in force mode as long as the current position is in book,
1682 and XBoard will select the book moves for it. Default: "".
1683 <br><dt>-fNoOwnBookUCI or -firstXBook or -firstHasOwnBookUCI true/false<dt>-sNoOwnBookUCI or -secondXBook or -secondHasOwnBookUCI true/false<dd><a name="index-fNoOwnBookUCI_002c-option-266"></a><a name="index-sNoOwnBookUCI_002c-option-267"></a><a name="index-firstHasOwnBookUCI_002c-option-268"></a><a name="index-secondHasOwnBookUCI_002c-option-269"></a><a name="index-firstXBook_002c-option-270"></a><a name="index-secondXBook_002c-option-271"></a>Indicates if the mentioned engine has its own opening book it should play from,
1684 rather than using the external book through XBoard.
1685 Default: depends on setting of the option <code>discourageOwnBooks</code>.
1686 <br><dt>-discourageOwnBooks true/false<dd><a name="index-discourageOwnBooks_002c-option-272"></a>When set, newly loaded engines will be assumed to use the GUI book,
1687 unless they explicitly specify differently.
1688 Otherwise they will be assumed to not use the GUI book,
1689 unless the specify differently (e.g. with <code>firstXBook</code>).
1691 <br><dt>-bookDepth n<dd><a name="index-bookDepth_002c-option-273"></a>Limits the use of the GUI book to the first n moves of each side.
1693 <br><dt>-bookVariation n<dd><a name="index-bookVariation_002c-option-274"></a>A value n from 0 to 100 tunes the choice of moves from the GUI books
1694 from totally random to best-only. Default: 50
1695 <br><dt>-fn string or -firstPgnName string<dt>-sn string or -secondPgnName string<dd><a name="index-firstPgnName_002c-option-275"></a><a name="index-secondPgnName_002c-option-276"></a><a name="index-fn_002c-option-277"></a><a name="index-sn_002c-option-278"></a>Indicates the name that should be used for the engine in PGN tags of
1696 engine-engine games.
1697 Intended to allow you to install verions of the same engine with different settings,
1698 and still distinguish them.
1700 <br><dt>-defaultHashSize n<dd><a name="index-defaultHashSize_002c-option-279"></a>Sets the size of the hash table to n MegaBytes. Together with the EGTB cache size
1701 this number is also used to calculate the memory setting of XBoard/WinBoard engines,
1702 for those that support the memory feature of the XBoard/WinBoard protocol. Default: 64.
1703 <br><dt>-defaultCacheSizeEGTB n<dd><a name="index-defaultCacheSizeEGTB_002c-option-280"></a>Sets the size of the EGTB cache to n MegaBytes. Together with the hash-table size
1704 this number is also used to calculate the memory setting of XBoard/WinBoard engines,
1705 for those that support the memory feature of the XBoard/WinBoard protocol. Default: 4.
1706 <br><dt>-defaultPathEGTB filename<dd><a name="index-defaultPathEGTB_002c-option-281"></a>Gives the name of the directory where the end-game tablebases are installed, for UCI engines.
1707 Default: "/usr/local/share/egtb".
1708 <br><dt>-egtFormats string<dd><a name="index-egtFormats_002c-option-282"></a>Specifies which end-game tables are installed on the computer, and where.
1709 The argument is a comma-separated list of format specifications,
1710 each specification consisting of a format name, a colon, and a directory path name,
1711 e.g. "nalimov:/usr/local/share/egtb".
1712 If the name part matches that of a format that the engine requests through a feature command,
1713 xboard will relay the path name for this format to the engine through an egtpath command.
1714 One egtpath command for each matching format will be sent.
1715 Popular formats are "nalimov" DTM tablebases and "scorpio" bitbases.
1717 <br><dt>-firstChessProgramNames={names}<dd>This option lets you customize the drop-down list of chess engine names
1718 that appears in the ‘<samp><span class="samp">Load Engine</span></samp>’ and ‘<samp><span class="samp">Match Options</span></samp>’ dialog.
1719 It consists of a list of strings, one per line.
1720 When an engine is loaded, the corresponding line is prefixed with "-fcp ",
1721 and processed like it appeared on the command line.
1722 That means that apart from the engine command,
1723 it can contain any list of XBoard options you want to use with this engine.
1724 (Commonly used options here are -fd, -firstXBook, -fUCI, -variant.)
1726 <p>The value of this option is gradually built as you load new engines
1727 through the ‘<samp><span class="samp">Load Engine</span></samp>’ menu dialog, with ‘<samp><span class="samp">Add to list</span></samp>’ ticked.
1728 To change it, edit your settings file with a plain text editor.
1732 <a name="Tournament-options"></a>
1734 Next: <a rel="next" accesskey="n" href="#ICS-options">ICS options</a>,
1735 Previous: <a rel="previous" accesskey="p" href="#UCI-_002b-WB-Engine-Settings">UCI + WB Engine Settings</a>,
1736 Up: <a rel="up" accesskey="u" href="#Options">Options</a>
1740 <h3 class="section">4.3 Tournament options</h3>
1742 <p><a name="index-Tournament-Options-283"></a><a name="index-Options_002c-Tournament-284"></a>
1744 <dt>-defaultMatchGames n<dd><a name="index-defaultMatchGames_002c-option-285"></a>Sets the number of games that will be used for a match between two engines
1745 started from the menu to n. Also used as games per pairing in other tournament
1746 formats. Default: 10.
1747 <br><dt>-matchPause n<dd><a name="index-matchPause_002c-option-286"></a>Specifies the duration of the pause between two games of a match or tournament
1748 between engines as n milliseconds.
1749 Especially engines that do not support ping need this option,
1750 to prevent that the move they are thinking on when an opponent unexpectedly
1751 resigns will be counted for the next game, (leading to illegal moves there).
1753 <br><dt>-tf filename or -tourneyFile filename<dd><a name="index-tf_002c-option-287"></a><a name="index-tourneyFile_002c-option-288"></a>Specifies the name of the tournament file used in match mode
1754 to conduct a multi-player tournament.
1755 This file is a special settings file,
1756 which stores the description of the tournament (including progress info),
1757 through normal options (e.g. for time control, load and save files),
1758 and through some special-purpose options listed below.
1759 <br><dt>-tt number or -tourneyType number<dd><a name="index-tt_002c-option-289"></a><a name="index-tourneyType_002c-option-290"></a>Specifies the type of tourney: 0 = round-robin,
1760 N>0 = (multi-)gauntlet with N gauntlet engines,
1761 -1 = Swiss through external pairing engine.
1762 Volatile option, but stored in tourney file.
1763 <br><dt>-cy number or -tourneyCycles number<dd><a name="index-cy_002c-option-291"></a><a name="index-tourneyCycles_002c-option-292"></a>Specifies the number of cycles in a tourney.
1764 Volatile option, but stored in tourney file.
1765 <br><dt>-participants list<dd><a name="index-participants_002c-option-293"></a>The list is a multi-line text string that specifies engines
1766 occurring in the <code>firstChesProgramNames</code> list
1767 in the settings file by their (implied or explicitly given) nicknames,
1768 one engine per line.
1769 The mentioned engines will play in the tourney.
1770 Volatile option, but stored in tourney file.
1771 <br><dt>-results string<dd><a name="index-results_002c-option-294"></a>The string of +=- characters lists the result of all played games in a toruney.
1772 Games currently playing are listed as *,
1773 while a space indicates a game that is not yet played or playing .
1774 Volatile option, but stored in tourney file.
1775 <br><dt>-defaultTourneyName string<dd><a name="index-defaultTourneyName_002c-option-295"></a>Specifies the name of the tournament file XBoard should propose
1776 when the ‘<samp><span class="samp">Match Options</span></samp>’ dialog is opened.
1777 Any %y, %M, %d, %h, %m, %s in the string are replaced by the current
1778 year, month, day of the month, hours, minutes, seconds of the current time,
1779 respectively, as two-digit number.
1780 A %Y would be replaced by the year as 4-digit number. Default: empty string.
1781 <br><dt>-pairingEngine filename<dd><a name="index-pairingEngine_002c-option-296"></a>Specifies the external program to be used to pair the participants in Swiss tourneys.
1782 XBoard communicates with this engine in the same way as it communicates with Chess engines.
1783 The only commands sent to the pairing engine are “results N string”,
1784 (where N is the number of participants,
1785 and string the results so far in the format of the results option),
1786 and “pairing N”, (where N is the number of the tourney game).
1787 To the latter the pairing engine should answer with “A-B”,
1788 where A and B are participant numbers (in the range 1-N).
1789 (There should be no reply to the results command.) Default: empty string.
1790 <br><dt>-afterGame string<dt>-afterTourney string<dd><a name="index-afterGame_002c-option-297"></a><a name="index-afterTourney_002c-option-298"></a>When non-empty, the given string will be executed as a system command
1791 after each tournament game, orafterthe tourney completes, respectively.
1792 This can be used, for example, to autmatically run a cross-table generator
1793 on the PGN file where games are saved, to update the tourney standings.
1795 <br><dt>-syncAfterRound true/false<dt>-syncAfterCycle true/false<dd><a name="index-syncAfterRound_002c-option-299"></a><a name="index-syncAfterCycle_002c-option-300"></a>Controls whether different instances of XBoard concurrently running the
1796 same tournament will wait for each other.
1797 Defaults: sync after cycle, but not after round.
1798 <br><dt>-seedBase number<dd><a name="index-seedBase_002c-option-301"></a>Used to store the seed of the pseudo-random-number generator in the
1799 tourneyFile, so that separate instances of XBoard working on the same
1800 tourney can take coherent 'random' decisions, such as picking an
1801 opening for a given game number.
1805 <a name="ICS-options"></a>
1807 Next: <a rel="next" accesskey="n" href="#Load-and-Save-options">Load and Save options</a>,
1808 Previous: <a rel="previous" accesskey="p" href="#Tournament-options">Tournament options</a>,
1809 Up: <a rel="up" accesskey="u" href="#Options">Options</a>
1813 <h3 class="section">4.4 ICS options</h3>
1815 <p><a name="index-ICS-options-302"></a><a name="index-Options_002c-ICS-303"></a>
1817 <dt>-ics/-xics or -internetChessServerMode true/false<dd><a name="index-ics_002c-option-304"></a><a name="index-internetChessServerMode_002c-option-305"></a>Connect with an Internet Chess Server to play chess against its
1818 other users, observe games they are playing, or review games
1819 that have recently finished. Default: false.
1820 <br><dt>-icshost or -internetChessServerHost host<dd><a name="index-icshost_002c-option-306"></a><a name="index-internetChessServerHost_002c-option-307"></a>The Internet host name or address of the chess server to connect
1821 to when in ICS mode. Default: <code>chessclub.com</code>.
1822 Another popular chess server to try is <code>freechess.org</code>.
1823 If your site doesn't have a working Internet name server, try
1824 specifying the host address in numeric form.
1826 to specify the numeric address when using the icshelper option
1827 with timestamp or timeseal (see below).
1828 <br><dt>-icsport or -internetChessServerPort port-number<dd><a name="index-icsport_002c-option-308"></a><a name="index-internetChessServerPort_002c-option-309"></a>The port number to use when connecting to a chess server in ICS
1829 mode. Default: 5000.
1830 <br><dt>-icshelper or -internetChessServerHelper prog-name<dd><a name="index-icshelper_002c-option-310"></a><a name="index-internetChessServerHelper_002c-option-311"></a>An external helper program used to communicate with the chess server.
1831 You would set it to "timestamp" for ICC (chessclub.com) or
1832 "timeseal" for FICS (freechess.org), after
1833 obtaining the correct version of timestamp or timeseal for your
1834 computer. See "help timestamp" on ICC and "help timeseal" on FICS.
1835 This option is shorthand for <code>-useTelnet -telnetProgram program</code>.
1836 <br><dt>-telnet/-xtelnet or -useTelnet true/false<dd><a name="index-telnet_002c-option-312"></a><a name="index-useTelnet_002c-option-313"></a>This option is poorly named; it should be called useHelper.
1837 If set to true, it instructs XBoard to run an external
1838 program to communicate with the Internet Chess Server.
1839 The program to use is given by the telnetProgram option.
1841 false (the default), XBoard opens a TCP socket and uses its own
1842 internal implementation of the telnet protocol to communicate with the
1843 ICS. See <a href="#Firewalls">Firewalls</a>.
1844 <br><dt>-telnetProgram prog-name<dd><a name="index-telnetProgram_002c-option-314"></a>This option is poorly named; it should be called helperProgram.
1845 It gives the name of the telnet program to be used with
1846 the <code>gateway</code> and <code>useTelnet</code> options. The default is
1847 <samp><span class="file">telnet</span></samp>. The telnet program is invoked with the value of
1848 <code>internetChessServerHost</code> as its first argument and the value
1849 of <code>internetChessServerPort</code> as its second argument.
1850 See <a href="#Firewalls">Firewalls</a>.
1851 <br><dt>-gateway host-name<dd><a name="index-gateway_002c-option-315"></a>If this option is set to a host name, XBoard communicates with the
1852 Internet Chess Server by using <samp><span class="file">rsh</span></samp> to run
1853 the <code>telnetProgram</code> on the given host,
1854 instead of using its own internal implementation
1855 of the telnet protocol. You can substitute a different remote shell
1856 program for <samp><span class="file">rsh</span></samp> using the <code>remoteShell</code> option described below.
1857 See <a href="#Firewalls">Firewalls</a>.
1858 <br><dt>-internetChessServerCommPort or -icscomm dev-name<dd><a name="index-internetChessServerCommPort_002c-option-316"></a><a name="index-icscomm_002c-option-317"></a>If this option is set, XBoard communicates with the ICS through
1859 the given character I/O device instead of opening a TCP connection.
1860 Use this option if your system does not have any kind of
1861 Internet connection itself (not even a SLIP or PPP connection),
1862 but you do have dial-up access (or a hardwired terminal line) to
1863 an Internet service provider from which you can telnet to the ICS.
1865 <p>The support for this option in XBoard is minimal. You need to
1866 set all communication parameters and tty modes before you enter
1869 <p>Use a script something like this:
1871 <pre class="example"> stty raw -echo 9600 > /dev/tty00
1872 xboard -ics -icscomm /dev/tty00
1874 <p>Here replace ‘<samp><span class="samp">/dev/tty00</span></samp>’ with the name of the device that your
1875 modem is connected to. You might have to add several more
1876 options to these stty commands. See the man pages for <samp><span class="file">stty</span></samp>
1877 and <code>tty</code> if you run into problems. Also, on many systems stty
1878 works on its standard input instead of standard output, so you
1879 have to use ‘<samp><span class="samp"><</span></samp>’ instead of ‘<samp><span class="samp">></span></samp>’.
1881 <p>If you are using linux, try starting with the script below.
1882 Change it as necessary for your installation.
1884 <pre class="example"> #!/bin/sh -f
1885 # configure modem and fire up XBoard
1889 stty 2400 ; stty raw ; stty hupcl ; stty -clocal
1890 stty ignbrk ; stty ignpar ; stty ixon ; stty ixoff
1891 stty -iexten ; stty -echo
1893 xboard -ics -icscomm /dev/modem
1895 <p class="noindent">After you start XBoard in this way, type whatever commands are
1896 necessary to dial out to your Internet provider and log in.
1897 Then telnet to ICS, using a command like
1898 <kbd>telnet chessclub.com 5000</kbd>.
1899 Important: See the paragraph below about extra echoes,
1900 in <a href="#Limitations">Limitations</a>.
1901 <br><dt>-icslogon or -internetChessServerLogonScript file-name<dd><a name="index-icslogon_002c-option-318"></a><a name="index-internetChessServerLogonScript_002c-option-319"></a><a name="index-g_t_002eicsrc-320"></a>Whenever XBoard connects to the Internet Chess Server,
1902 if it finds a file with the name given in this option, it feeds the
1903 file's contents to the ICS as commands. The default file name
1904 is <samp><span class="file">.icsrc</span></samp>.
1905 Usually the first two lines of the file should be
1906 your ICS user name and password.
1907 The file can be either in $CHESSDIR, in XBoard's working
1908 directory if CHESSDIR is not set, or in your home directory.
1909 <br><dt>-msLoginDelay delay<dd><a name="index-msLoginDelay_002c-option-321"></a>If you experience trouble logging on to an ICS when using the
1910 <code>-icslogon</code> option, inserting some delay between characters
1911 of the logon script may help. This option adds <code>delay</code>
1912 milliseconds of delay between characters. Good values to try
1914 <br><dt>-icsinput/-xicsinput or -internetChessServerInputBox true/false<dd><a name="index-icsinput_002c-option-322"></a><a name="index-internetChessServerInputBox_002c-option-323"></a>Sets the ICS Input Box menu option. See <a href="#Mode-Menu">Mode Menu</a>. Default: false.
1915 <br><dt>-autocomm/-xautocomm or -autoComment true/false<dd><a name="index-autocomm_002c-option-324"></a><a name="index-autoComment_002c-option-325"></a>Sets the Auto Comment menu option. See <a href="#Options-Menu">Options Menu</a>. Default: false.
1916 <br><dt>-autoflag/-xautoflag or -autoCallFlag true/false<dd><a name="index-autoflag_002c-option-326"></a><a name="index-autoCallFlag_002c-option-327"></a>Sets the Auto Flag menu option. See <a href="#Options-Menu">Options Menu</a>. Default: false.
1917 <br><dt>-autobs/-xautobs or -autoObserve true/false<dd><a name="index-autobs_002c-option-328"></a><a name="index-autoObserve_002c-option-329"></a>Sets the Auto Observe menu option. See <a href="#Options-Menu">Options Menu</a>. Default: false.
1918 <br><dt>-autoKibitz<dd><a name="index-autoKibitz_002c-option-330"></a>Enables kibitzing of the engines last thinking output (depth, score, time, speed, PV)
1920 to the ICS, in zippy mode. The option <code>showThinking</code> must be switched on for
1921 this option to work.
1922 Also diverts similar kibitz information of an opponent engine that is playing you
1923 through the ICS to the engine-output window, as if the engine was playing locally.
1924 <br><dt>-seekGraph true/false or -sg<dd><a name="index-seekGraph_002c-option-331"></a><a name="index-sg_002c-option-332"></a>Enables displaying of the seek graph by left-clicking the board when
1925 you are logged on to an ICS and currently idle.
1926 The seek graph show all players currently seeking games on the ICS,
1927 plotted according to their rating and the time control of the game they seek,
1928 in three different colors (for rated, unrated and wild games).
1929 Computer ads are displayed as squares, human ads are dots.
1931 <br><dt>-autoRefresh true/false<dd><a name="index-autoRefresh_002c-option-333"></a>Enables automatic updating of the seek graph,
1932 by having the ICS send a running update of all newly placed
1933 and removed seek ads.
1934 This consumes a substantial amount of communication bandwidth,
1935 and is only supported for FICS and ICC.
1937 <br><dt>-backgroundObserve true/false<dd><a name="index-backgroundObserve_002c-option-334"></a>When true, boards sent to you by the ICS from other games while you are playing
1938 (e.g. because you are observing them)
1939 will not be automatically displayed.
1940 Only a summary of time left and material of both players will appear
1941 in the message field above the board.
1942 XBoard will remember the last board it has received this way,
1943 and will display it in stead of the position in your own game
1944 when you press the right mouse button.
1945 No other information is stored on such games observed in the background;
1946 you cannot save such a game later, or step through its moves.
1947 This feature is provided solely for the benefit of bughouse players,
1948 to enable them to peek at their partner's game without the need
1951 <br><dt>-dualBoard true/false<dd><a name="index-dualBoard_002c-option-335"></a>In combination with -backgroundObserve true, this option will display
1952 the board of the background game side by side with that of your own game,
1953 so you can have it in view permanently.
1954 Any board or holdings info coming in will be displayed on the secondary
1956 This feature is still experimental and largely unfinished.
1957 There is no animation or highlighting of moves on the secondary board.
1959 <br><dt>-disguisePromotedPieces true/false<dd><a name="index-disguisePromotedPieces_002c-option-336"></a>When set promoted Pawns in crazyhouse/bughouse are displayed identical
1960 to primordial pieces of the same type, rather than distinguishable.
1962 <br><dt>-moves/-xmoves or -getMoveList true/false<dd><a name="index-moves_002c-option-337"></a><a name="index-getMoveList_002c-option-338"></a>Sets the Get Move List menu option. See <a href="#Options-Menu">Options Menu</a>. Default: true.
1963 <br><dt>-alarm/-xalarm or -icsAlarm true/false<dd><a name="index-alarm_002c-option-339"></a><a name="index-icsAlarm_002c-option-340"></a>Sets the ICS Alarm menu option. See <a href="#Options-Menu">Options Menu</a>. Default: true.
1964 <br><dt>-icsAlarmTime ms<dd><a name="index-icsAlarmTime_002c-option-341"></a>Sets the time in milliseconds for the ICS Alarm menu option.
1965 See <a href="#Options-Menu">Options Menu</a>. Default: 5000.
1966 <br><dt>lowTimeWarning true/false<dd><a name="index-lowTimeWarning_002c-option-342"></a>Controls a color change of the board as a warning your time is running out.
1967 See <a href="#Options-Menu">Options Menu</a>. Default: false.
1968 <br><dt>-pre/-xpre \fRor\fB -premove true/false<dd><a name="index-pre_002c-option-343"></a><a name="index-premove_002c-option-344"></a>Sets the Premove menu option. See <a href="#Options-Menu">Options Menu</a>. Default: true.
1969 <br><dt>-prewhite/-xprewhite or -premoveWhite<dt>-preblack/-xpreblack or -premoveBlack<dt>-premoveWhiteText string<dt>-premoveBlackText string<dd><a name="index-prewhite_002c-option-345"></a><a name="index-premoveWhite_002c-option-346"></a><a name="index-preblack_002c-option-347"></a><a name="index-premoveBlack_002c-option-348"></a><a name="index-premoveWhiteText_002c-option-349"></a><a name="index-premoveBlackText_002c-option-350"></a>Set the menu options for specifying the first move for either color.
1970 See <a href="#Options-Menu">Options Menu</a>. Defaults: false and empty strings, so no pre-moves.
1971 <br><dt>-quiet/-xquiet or -quietPlay true/false<dd><a name="index-quiet_002c-option-351"></a><a name="index-quietPlay_002c-option-352"></a>Sets the Quiet Play menu option. See <a href="#Options-Menu">Options Menu</a>. Default: false.
1972 <br><dt>-colorizeMessages or -colorize/-xcolorize<dd><a name="index-Colors-353"></a><a name="index-colorize_002c-option-354"></a><a name="index-colorizeMessages_002c-option-355"></a>Setting colorizeMessages
1973 to true tells XBoard to colorize the messages received from
1974 the ICS. Colorization works only if your xterm
1975 supports ISO 6429 escape sequences for changing text colors.
1977 <br><dt>-colorShout foreground,background,bold<dt>-colorSShout foreground,background,bold<dt>-colorCShout foreground,background,bold<dt>-colorChannel1 foreground,background,bold<dt>-colorChannel foreground,background,bold<dt>-colorKibitz foreground,background,bold<dt>-colorTell foreground,background,bold<dt>-colorChallege foreground,background,bold<dt>-colorRequest foreground,background,bold<dt>-colorSeek foreground,background,bold<dt>-colorNormal foreground,background,bold<dd><a name="index-Colors-356"></a><a name="index-colorShout_002c-option-357"></a><a name="index-colorSShout_002c-option-358"></a><a name="index-colorCShout_002c-option-359"></a><a name="index-colorChannel1_002c-option-360"></a><a name="index-colorChannel_002c-option-361"></a><a name="index-colorKibitz_002c-option-362"></a><a name="index-colorTell_002c-option-363"></a><a name="index-colorChallenge_002c-option-364"></a><a name="index-colorRequest_002c-option-365"></a><a name="index-colorSeek_002c-option-366"></a><a name="index-colorNormal_002c-option-367"></a>These options set the colors used when colorizing ICS messages.
1978 All ICS messages are grouped into one of these categories:
1979 shout, sshout, channel 1, other channel, kibitz, tell, challenge,
1980 request (including abort, adjourn, draw, pause, and takeback), or
1981 normal (all other messages).
1983 <p>Each foreground or background argument can be one of the following:
1984 black, red, green, yellow, blue, magenta, cyan, white, or default.
1985 Here “default” means the default foreground or background color of
1986 your xterm. Bold can be 1 or 0. If background is omitted, “default”
1987 is assumed; if bold is omitted, 0 is assumed.
1989 <p>Here is an example of how to set the colors in your <samp><span class="file">.Xresources</span></samp> file.
1990 The colors shown here are the default values; you will get
1991 them if you turn <code>-colorize</code> on without specifying your own colors.
1992 CShout is synonymous with SShout.
1994 <pre class="example"> xboard*colorizeMessages: true
1995 xboard*colorShout: green
1996 xboard*colorSShout: green, black, 1
1997 xboard*colorChannel1: cyan
1998 xboard*colorChannel: cyan, black, 1
1999 xboard*colorKibitz: magenta, black, 1
2000 xboard*colorTell: yellow, black, 1
2001 xboard*colorChallenge: red, black, 1
2002 xboard*colorRequest: red
2003 xboard*colorSeek: blue
2004 xboard*colorNormal: default
2006 <br><dt>-soundProgram progname<dd><a name="index-soundProgram_002c-option-368"></a><a name="index-Sounds-369"></a>If this option is set to a sound-playing program that is installed and
2007 working on your system, XBoard can play sound files when certain
2008 events occur, listed below. The default program name is "play". If
2009 any of the sound options is set to "$", the event rings the terminal
2010 bell by sending a ^G character to standard output, instead of playing
2011 a sound file. If an option is set to the empty string "", no sound is
2012 played for that event.
2013 <br><dt>-soundDirectory directoryname<dd><a name="index-soundDirectory_002c-option-370"></a><a name="index-Sounds-371"></a>This option specifies where XBoard will look for sound files,
2014 when these are not given as an absolute path name.
2015 <br><dt>-soundShout filename<dt>-soundSShout filename<dt>-soundCShout filename<dt>-soundChannel filename<dt>-soundChannel1 filename<dt>-soundKibitz filename<dt>-soundTell filename<dt>-soundChallenge filename<dt>-soundRequest filename<dt>-soundSeek filename<dd><a name="index-soundShout_002c-option-372"></a><a name="index-soundSShout_002c-option-373"></a><a name="index-soundCShout_002c-option-374"></a><a name="index-soundChannel_002c-option-375"></a><a name="index-soundChannel1_002c-option-376"></a><a name="index-soundKibitz_002c-option-377"></a><a name="index-soundTell_002c-option-378"></a><a name="index-soundChallenge_002c-option-379"></a><a name="index-soundRequest_002c-option-380"></a><a name="index-soundSeek_002c-option-381"></a>These sounds are triggered in the same way as the colorization events
2016 described above. They all default to "", no sound. They are played
2017 only if the colorizeMessages is on.
2018 CShout is synonymous with SShout.
2019 <br><dt>-soundMove filename<dd><a name="index-soundMove_002c-option-382"></a>This sound is used by the Move Sound menu option. Default: "$".
2020 <br><dt>-soundIcsAlarm filename<dd><a name="index-soundIcsAlarm_002c-option-383"></a>This sound is used by the ICS Alarm menu option. Default: "$".
2021 <br><dt>-soundIcsWin filename<dd><a name="index-soundIcsWin_002c-option-384"></a>This sound is played when you win an ICS game. Default: "" (no sound).
2022 <br><dt>-soundIcsLoss filename<dd><a name="index-soundIcsLoss_002c-option-385"></a>This sound is played when you lose an ICS game. Default: "" (no sound).
2023 <br><dt>-soundIcsDraw filename<dd><a name="index-soundIcsDraw_002c-option-386"></a>This sound is played when you draw an ICS game. Default: "" (no sound).
2024 <br><dt>-soundIcsUnfinished filename<dd><a name="index-soundIcsUnfinished_002c-option-387"></a>This sound is played when an ICS game that you are participating in is
2025 aborted, adjourned, or otherwise ends inconclusively. Default: "" (no
2028 <p>Here is an example of how to set the sounds in your <samp><span class="file">.Xresources</span></samp> file:
2030 <pre class="example"> xboard*soundShout: shout.wav
2031 xboard*soundSShout: sshout.wav
2032 xboard*soundChannel1: channel1.wav
2033 xboard*soundChannel: channel.wav
2034 xboard*soundKibitz: kibitz.wav
2035 xboard*soundTell: tell.wav
2036 xboard*soundChallenge: challenge.wav
2037 xboard*soundRequest: request.wav
2038 xboard*soundSeek: seek.wav
2039 xboard*soundMove: move.wav
2040 xboard*soundIcsWin: win.wav
2041 xboard*soundIcsLoss: lose.wav
2042 xboard*soundIcsDraw: draw.wav
2043 xboard*soundIcsUnfinished: unfinished.wav
2044 xboard*soundIcsAlarm: alarm.wav
2049 <a name="Load-and-Save-options"></a>
2051 Next: <a rel="next" accesskey="n" href="#User-interface-options">User interface options</a>,
2052 Previous: <a rel="previous" accesskey="p" href="#ICS-options">ICS options</a>,
2053 Up: <a rel="up" accesskey="u" href="#Options">Options</a>
2057 <h3 class="section">4.5 Load and Save options</h3>
2059 <p><a name="index-Options_002c-Load-and-Save-388"></a><a name="index-Load-and-Save-options-389"></a>
2061 <dt>-lgf or -loadGameFile file<dt>-lgi or -loadGameIndex index<dd><a name="index-lgf_002c-option-390"></a><a name="index-loadGameFile_002c-option-391"></a><a name="index-lgi_002c-option-392"></a><a name="index-loadGameIndex_002c-option-393"></a>If the <code>loadGameFile</code> option is set, XBoard loads the specified
2062 game file at startup. The file name <samp><span class="file">-</span></samp> specifies the standard
2063 input. If there is more than one game in the file, XBoard
2064 pops up a menu of the available games, with entries based on their PGN
2065 (Portable Game Notation) tags.
2066 If the <code>loadGameIndex</code> option is set to ‘<samp><span class="samp">N</span></samp>’, the menu is suppressed
2067 and the N th game found in the file is loaded immediately.
2068 The menu is also suppressed if <code>matchMode</code> is enabled or if the game file
2069 is a pipe; in these cases the first game in the file is loaded immediately.
2070 Use the <samp><span class="file">pxboard</span></samp> shell script provided with XBoard if you
2071 want to pipe in files containing multiple games and still see the menu.
2072 If the loadGameIndex specifies an index -1, this triggers auto-increment
2073 of the index in <code>matchMode</code>, which means that after every game the
2074 index is incremented by one, causing each game of the match to be played
2075 from the next game in the file. Similarly, specifying an index value of -2
2076 causes the index to be incremented every two games, so that each game
2077 in the file is used twice (with reversed colors).
2078 The <code>rewindIndex</code> option causes the index to be reset to the
2079 first game of the file when it has reached a specified value.
2080 <br><dt>-rewindIndex n<dd>Causes a position file or game file to be rewound to its beginning after n
2081 positions or games in auto-increment <code>matchMode</code>.
2082 See <code>loadPositionIndex</code> and <code>loadGameIndex</code>.
2083 default: 0 (no rewind).
2084 <br><dt>-td or -timeDelay seconds<dd><a name="index-td_002c-option-394"></a><a name="index-timeDelay_002c-option-395"></a>Time delay between moves during ‘<samp><span class="samp">Load Game</span></samp>’ or ‘<samp><span class="samp">Analyze File</span></samp>’.
2085 Fractional seconds are allowed; try ‘<samp><span class="samp">-td 0.4</span></samp>’.
2086 A time delay value of -1 tells
2087 XBoard not to step through game files automatically. Default: 1 second.
2088 <br><dt>-sgf or -saveGameFile file<dd><a name="index-sgf_002c-option-396"></a><a name="index-saveGameFile_002c-option-397"></a>If this option is set, XBoard appends a record of every game
2089 played to the specified file. The file name <samp><span class="file">-</span></samp> specifies the
2091 <br><dt>-autosave/-xautosave or -autoSaveGames true/false<dd><a name="index-autosave_002c-option-398"></a><a name="index-autoSaveGames_002c-option-399"></a>Sets the Auto Save menu option. See <a href="#Options-Menu">Options Menu</a>. Default: false.
2092 Ignored if <code>saveGameFile</code> is set.
2093 <br><dt>-lpf or -loadPositionFile file<dt>-lpi or -loadPositionIndex index<dd><a name="index-lpf_002c-option-400"></a><a name="index-loadPositionFile_002c-option-401"></a><a name="index-lpi_002c-option-402"></a><a name="index-loadPositionIndex_002c-option-403"></a>If the <code>loadPositionFile</code> option is set, XBoard loads the
2094 specified position file at startup. The file name <samp><span class="file">-</span></samp> specifies the
2095 standard input. If the <code>loadPositionIndex</code> option is set to N,
2096 the Nth position found in the file is loaded; otherwise the
2097 first position is loaded.
2098 If the loadPositionIndex specifies an index -1, this triggers auto-increment
2099 of the index in <code>matchMode</code>, which means that after every game the
2100 index is incremented by one, causing each game of the match to be played
2101 from the next position in the file. Similarly, specifying an index value of -2
2102 causes the index to be incremented every two games, so that each position
2103 in the file is used twice (with the engines playing opposite colors).
2104 The <code>rewindIndex</code> option causes the index to be reset to the
2105 first position of the file when it has reached a specified value.
2106 <br><dt>-spf or -savePositionFile file<dd><a name="index-spf_002c-option-404"></a><a name="index-savePositionFile_002c-option-405"></a>If this option is set, XBoard appends the final position reached
2107 in every game played to the specified file. The file name <samp><span class="file">-</span></samp>
2108 specifies the standard output.
2109 <br><dt>-pgnExtendedInfo true/false<dd><a name="index-pgnExtendedInfo_002c-option-406"></a>If this option is set, XBoard saves depth, score and time used for each
2110 move that the engine found as a comment in the PGN file.
2112 <br><dt>-pgnEventHeader string<dd><a name="index-pgnEventHeader_002c-option-407"></a>Sets the name used in the PGN event tag to string.
2113 Default: "Computer Chess Game".
2114 <br><dt>-pgnNumberTag true/false<dd><a name="index-pgnNumberTag_002c-option-408"></a>Include the (unique) sequence number of a tournament game into the saved
2115 PGN file as a 'number' tag.
2117 <br><dt>-saveOutOfBookInfo true/false<dd><a name="index-saveOutOfBookInfo_002c-option-409"></a>Include the information on how the engine(s) game out of its opening book
2118 in a special 'annotator' tag with the PGN file.
2120 <br><dt>-oldsave/-xoldsave or -oldSaveStyle true/false<dd><a name="index-oldsave_002c-option-410"></a><a name="index-oldSaveStyle_002c-option-411"></a>Sets the Old Save Style menu option. See <a href="#Options-Menu">Options Menu</a>. Default: false.
2121 <br><dt>-gameListTags string<dd><a name="index-gameListTags_002c-option-412"></a>The character string lists the PGN tags that should be printed in the
2122 Game List, and their order. The meaning of the codes is e=event,
2123 s=site, d=date, o=round, p=players, r=result, w=white Elo, b=black Elo,
2124 t=time control, v=variant, a=out-of-book info, c=result comment.
2126 <br><dt>-ini or -settingsFile filename<dt>-saveSettingsFile filename<dt>@filename<dd><a name="index-saveSettingsFile_002c-option-413"></a><a name="index-SettingsFile_002c-option-414"></a><a name="index-init_002c-option-415"></a><a name="index-at-sign_002c-option-416"></a>When XBoard encounters an option -settingsFile (or -ini for short),
2127 or @filename, it tries to read the mentioned file,
2128 and substitutes the contents of it (presumaby more command-line options)
2129 in place of the option.
2130 In the case of -ini or -settingsFile, the name of a successfully read
2131 settings file is also remembered as the file to use for saving settings
2132 (automatically on exit, or on user command).
2133 An option of the form @filename does not affect saving.
2134 The option -saveSettingsFile does specify a name of the file to use
2135 for saving, without reading any options from it, and is thus also effective
2136 when the file did not exist yet.
2137 So the settings will be saved to the file specified in the last
2138 -saveSettingsFile or succesfull -settingsFile / -ini command,
2139 if any, and in /etc/xboard/xboard.conf otherwise.
2140 Usualy the latter is only accessible for the system administrator, though,
2141 and will be used to contain system-wide default setings, amongst which
2142 a -saveSettingsFile and -settingsFile options to specify a settings file
2143 accessible to the individual user, such as ~/.xboardrc in the user's
2145 <br><dt>-saveSettingsOnExit true/false<dd><a name="index-saveSettingsOnExit_002c-option-417"></a>Controls saving of options on the settings file. See <a href="#Options-Menu">Options Menu</a>.
2150 <a name="User-interface-options"></a>
2152 Next: <a rel="next" accesskey="n" href="#Adjudication-Options">Adjudication Options</a>,
2153 Previous: <a rel="previous" accesskey="p" href="#Load-and-Save-options">Load and Save options</a>,
2154 Up: <a rel="up" accesskey="u" href="#Options">Options</a>
2158 <h3 class="section">4.6 User interface options</h3>
2160 <p><a name="index-User-interface-options-418"></a><a name="index-Options_002c-User-interface-419"></a>
2162 <dt>-display<dt>-geometry<dt>-iconic<dt>-name<dd><a name="index-display_002c-option-420"></a><a name="index-geometry_002c-option-421"></a><a name="index-iconic_002c-option-422"></a><a name="index-resource-name_002c-option-423"></a>These and most other standard Xt options are accepted.
2163 <br><dt>-noGUI<dd><a name="index-noGUI_002c-option-424"></a>Suppresses all GUI functions of XBoard
2164 (to speed up automated ultra-fast engine-engine games, which you don't want to watch).
2165 There will be no board or clock updates, no printing of moves,
2166 and no update of the icon on the task bar in this mode.
2167 <br><dt>-recentEngines number<dt>-recentEngineList list<dd><a name="index-recentEngines_002c-option-425"></a><a name="index-recentEngineList_002c-option-426"></a>When the number is larger than zero, it determines how many recently
2168 used engines will be appended at the bottom of the ‘<samp><span class="samp">Engines</span></samp>’ menu.
2169 The engines will be saved in your settings file as the option
2170 <code>recentEngineList</code>, by their nicknames,
2171 and the most recently used one will always be sorted to the top.
2172 If the list after that is longer than the specified number,
2173 the last one is discarded.
2174 Changes in the list will only become visible the next session,
2175 provided you saved the settings.
2177 <br><dt>-oneClickMove true/false<dd><a name="index-oneClickMove_002c-option-427"></a>When set, this option allows you to enter moves by only clicking the to-
2178 or from-square, when only a single legal move to or from that square
2180 Double-clicking a piece (or clicking an already selected piece)
2181 will instruct that piece to make the only capture it can legally do.
2183 <br><dt>-movesound/-xmovesound or -ringBellAfterMoves true/false<dd><a name="index-movesound_002c-option-428"></a><a name="index-bell_002c-option-429"></a><a name="index-ringBellAfterMoves_002c-option-430"></a>Sets the Move Sound menu option. See <a href="#Options-Menu">Options Menu</a>. Default: false.
2184 For compatibility with old XBoard versions, -bell/-xbell are also
2185 accepted as abbreviations for this option.
2186 <br><dt>-exit/-xexit or -popupExitMessage true/false<dd><a name="index-exit_002c-option-431"></a><a name="index-popupExitMessage_002c-option-432"></a>Sets the Popup Exit Message menu option. See <a href="#Options-Menu">Options Menu</a>. Default: true.
2187 <br><dt>-popup/-xpopup or -popupMoveErrors true/false<dd><a name="index-popup_002c-option-433"></a><a name="index-popupMoveErrors_002c-option-434"></a>Sets the Popup Move Errors menu option. See <a href="#Options-Menu">Options Menu</a>. Default: false.
2188 <br><dt>-queen/-xqueen or -alwaysPromoteToQueen true/false<dd><a name="index-queen_002c-option-435"></a><a name="index-alwaysPromoteToQueen_002c-option-436"></a>Sets the Always Queen menu option. See <a href="#Options-Menu">Options Menu</a>. Default: false.
2189 <br><dt>-sweepPromotions true/false<dd><a name="index-sweepPromotion_002c-option-437"></a>Sets the ‘<samp><span class="samp">Almost Always Promote to Queen</span></samp>’ menu option.
2190 See <a href="#Options-Menu">Options Menu</a>. Default: false.
2191 <br><dt>-legal/-xlegal or -testLegality true/false<dd><a name="index-legal_002c-option-438"></a><a name="index-testLegality_002c-option-439"></a>Sets the Test Legality menu option. See <a href="#Options-Menu">Options Menu</a>. Default: true.
2192 <br><dt>-size or -boardSize (sizeName | n1,n2,n3,n4,n5,n6,n7)<dd><a name="index-size_002c-option-440"></a><a name="index-boardSize_002c-option-441"></a><a name="index-board-size-442"></a>Determines how large the board will be, by selecting the pixel size
2193 of the pieces and setting a few related parameters.
2194 The sizeName can be one of: Titanic, giving 129x129 pixel pieces,
2195 Colossal 116x116, Giant 108x108, Huge 95x95, Big 87x87, Large 80x80, Bulky 72x72,
2196 Medium 64x64, Moderate 58x58, Average 54x54, Middling 49x49, Mediocre
2197 45x45, Small 40x40, Slim 37x37, Petite 33x33, Dinky 29x29, Teeny 25x25,
2199 Orthodox pieces of all these sizes are built into XBoard.
2201 be used if you have them; see the pixmapDirectory and bitmapDirectory
2203 Complete sets of un-orthodox pieces are only provided in sizes
2204 Bulky, Middling and (to a lesser extent) Petite;
2205 Archbishop, Marshall and Amazon are also available in all sizes between
2207 When no bitmap is available, the piece will be displayed as Amazon or King.
2208 The default depends on the size of your screen; it is approximately the
2209 largest size that will fit without clipping.
2211 <p>You can select other sizes or vary other layout parameters by providing
2212 a list of comma-separated values (with no spaces) as the argument.
2213 You do not need to provide all the values; for any you omit from the
2214 end of the list, defaults are taken from the nearest built-in size.
2215 The value <code>n1</code> gives the piece size, <code>n2</code> the width of the
2217 between squares, <code>n3</code> the desired size for the
2218 clockFont, <code>n4</code> the desired size for the coordFont,
2219 <code>n5</code> the desired size for the messageFont,
2220 <code>n6</code> the smallLayout flag (0 or 1),
2221 and <code>n7</code> the tinyLayout flag (0 or 1).
2222 All dimensions are in pixels.
2223 If the border between squares is eliminated (0 width), the various
2224 highlight options will not work, as there is nowhere to draw the highlight.
2225 If smallLayout is 1 and <code>titleInWindow</code> is true,
2226 the window layout is rearranged to make more room for the title.
2227 If tinyLayout is 1, the labels on the menu bar are abbreviated
2228 to one character each and the buttons in the button bar are made narrower.
2229 <br><dt>-overrideLineGap n<dd><a name="index-overrideLineGap_002c-option-443"></a>When n >= 0, this forces the width of the black border between squares
2230 to n pixels for any board size. Mostly used to suppress the grid
2231 entirely by setting n = 0, e.g. in xiangqi or just getting a prettier
2232 picture. When n < 0 this the size-dependent width of the grid lines
2233 is used. Default: -1.
2234 <br><dt>-coords/-xcoords or -showCoords true/false<dd><a name="index-coords_002c-option-444"></a><a name="index-showCoords_002c-option-445"></a>Sets the Show Coords menu option. See <a href="#Options-Menu">Options Menu</a>. Default: false.
2235 The <code>coordFont</code> option specifies what font to use.
2236 <br><dt>-autoraise/-xautoraise or -autoRaiseBoard true/false<dd><a name="index-autoraise_002c-option-446"></a><a name="index-autoRaiseBoard_002c-option-447"></a>Sets the Auto Raise Board menu option. See <a href="#Options-Menu">Options Menu</a>. Default: true.
2237 <br><dt>-autoflip/-xautoflip or -autoFlipView true/false<dd><a name="index-autoflip_002c-option-448"></a><a name="index-autoFlipView_002c-option-449"></a>Sets the Auto Flip View menu option. See <a href="#Options-Menu">Options Menu</a>. Default: true.
2238 <br><dt>-flip/-xflip or -flipView true/false<dd><a name="index-flip_002c-option-450"></a><a name="index-flipView_002c-option-451"></a>If Auto Flip View is not set, or if you are observing but not participating
2239 in a game, then the positioning of the board at the start of each game
2240 depends on the flipView option. If flipView is false (the default),
2241 the board is positioned so that the white pawns move from the bottom to the
2242 top; if true, the black pawns move from the bottom to the top.
2243 In any case, the Flip menu option (see <a href="#Options-Menu">Options Menu</a>)
2244 can be used to flip the board after
2246 <br><dt>-title/-xtitle or -titleInWindow true/false<dd><a name="index-title_002c-option-452"></a><a name="index-titleInWindow_002c-option-453"></a>If this option is true, XBoard displays player names (for ICS
2247 games) and game file names (for ‘<samp><span class="samp">Load Game</span></samp>’) inside its main
2248 window. If the option is false (the default), this information is
2249 displayed only in the window banner. You probably won't want to
2250 set this option unless the information is not showing up in the
2251 banner, as happens with a few X window managers.
2252 <br><dt>-buttons/-xbuttons or -showButtonBar True/False<dd><a name="index-buttons_002c-option-454"></a><a name="index-showButtonBar_002c-option-455"></a>If this option is False, xboard omits the [<<] [<] [P] [>] [>>] button
2253 bar from the window, allowing the message line to be wider. You can
2254 still get the functions of these buttons using the menus or their keyboard
2255 shortcuts. Default: true.
2256 <br><dt>-evalZoom factor<dd><a name="index-evalZoom_002c-option-456"></a>The score interval (-1,1) is blown up on the vertical axis of
2257 the Evaluation Graph by the given factor.
2259 <br><dt>-evalThreshold n<dd><a name="index-evalThreshold_002c-option-457"></a>Score below n (centiPawn) are plotted as 0 in the Evaluation Graph.
2261 <br><dt>-mono/-xmono or -monoMode true/false<dd><a name="index-mono_002c-option-458"></a><a name="index-monoMode_002c-option-459"></a>Determines whether XBoard displays its pieces and squares with
2262 two colors (true) or four (false). You shouldn't have to
2263 specify <code>monoMode</code>; XBoard will determine if it is necessary.
2264 <br><dt>-showTargetSquares true/false<dd><a name="index-showTargetSquares_002c-option-460"></a>Determines whether XBoard can highlight the squares a piece has
2265 legal moves to, when you grab that piece with the mouse.
2267 <br><dt>-flashCount count<dt>-flashRate rate<dt>-flash/-xflash<dd><a name="index-flashCount_002c-option-461"></a><a name="index-flashRate_002c-option-462"></a><a name="index-flash_002c-option-463"></a><a name="index-xflash_002c-option-464"></a>These options enable flashing of pieces when they
2268 land on their destination square.
2269 <code>flashCount</code>
2270 tells XBoard how many times to flash a piece after it
2271 lands on its destination square.
2272 <code>flashRate</code>
2273 controls the rate of flashing (flashes/sec).
2276 sets flashCount to 3.
2278 sets flashCount to 0.
2279 Defaults: flashCount=0 (no flashing), flashRate=5.
2280 <br><dt>-highlight/-xhighlight or -highlightLastMove true/false<dd><a name="index-highlight_002c-option-465"></a><a name="index-highlightLastMove_002c-option-466"></a>Sets the Highlight Last Move menu option. See <a href="#Options-Menu">Options Menu</a>. Default: false.
2281 <br><dt>-highlightMoveWithArrow true/false<dd><a name="index-highlight-Arrow_002c-option-467"></a><a name="index-highlightMoveWithArrow_002c-option-468"></a>Sets the Highlight with Arrow menu option. See <a href="#Options-Menu">Options Menu</a>. Default: false.
2282 <br><dt>-blind/-xblind or -blindfold true/false<dd><a name="index-blind_002c-option-469"></a><a name="index-blindfold_002c-option-470"></a>Sets the Blindfold menu option. See <a href="#Options-Menu">Options Menu</a>. Default: false.
2283 <br><dt>-periodic/-xperiodic or -periodicUpdates true/false<dd><a name="index-periodic_002c-option-471"></a><a name="index-periodicUpdates_002c-option-472"></a>Controls updating of current move andnode counts in analysis mode. Default: true.
2284 <br><dt>-fSAN<dt>-sSAN<dd><a name="index-fSAN_002c-option-473"></a><a name="index-sSAN_002c-option-474"></a>Causes the PV in thinking output of the mentioned engine to be converted
2285 to SAN before it is further processed.
2286 Warning: this might lose engine output not understood by the parser,
2287 and uses a lot of CPU power.
2288 Default: the PV is displayed exactly as the engine produced it.
2289 <br><dt>-showEvalInMoveHistory true/false<dd><a name="index-showEvalInMoveHistory_002c-option-475"></a>Controls whether the evaluation scores and search depth of engine moves
2290 are displayed with the move in the move-history window.
2292 <br><dt>-clockFont font<dd><a name="index-clockFont_002c-option-476"></a><a name="index-Font_002c-clock-477"></a>The font used for the clocks. If the option value is a pattern
2293 that does not specify the font size, XBoard tries to choose an
2294 appropriate font for the board size being used.
2295 Default: -*-helvetica-bold-r-normal–*-*-*-*-*-*-*-*.
2296 <br><dt>-coordFont font<dd><a name="index-coordFont_002c-option-478"></a><a name="index-Font_002c-coordinates-479"></a>The font used for rank and file coordinate labels if <code>showCoords</code>
2297 is true. If the option value is a pattern that does not specify
2298 the font size, XBoard tries to choose an appropriate font for
2299 the board size being used.
2300 Default: -*-helvetica-bold-r-normal–*-*-*-*-*-*-*-*.
2301 <br><dt>-messageFont font<dd><a name="index-messageFont_002c-option-480"></a><a name="index-Font_002c-message-481"></a>The font used for popup dialogs, menus, comments, etc.
2302 If the option value is a pattern that does not specify
2303 the font size, XBoard tries to choose an appropriate font for
2304 the board size being used.
2305 Default: -*-helvetica-medium-r-normal–*-*-*-*-*-*-*-*.
2306 <br><dt>-fontSizeTolerance tol<dd><a name="index-fontSizeTolerance_002c-option-482"></a>In the font selection algorithm, a nonscalable font will be preferred
2307 over a scalable font if the nonscalable font's size differs
2308 by <code>tol</code> pixels
2309 or less from the desired size. A value of -1 will force
2310 a scalable font to always be used if available; a value of 0 will
2311 use a nonscalable font only if it is exactly the right size;
2312 a large value (say 1000) will force a nonscalable font to always be
2313 used if available. Default: 4.
2314 <br><dt>-bm or -bitmapDirectory dir<dt>-pixmap or -pixmapDirectory dir<dd><a name="index-bm_002c-option-483"></a><a name="index-bitmapDirectory_002c-option-484"></a><a name="index-pixmap_002c-option-485"></a><a name="index-pixmapDirectory_002c-option-486"></a>These options control what piece images xboard uses. The XBoard
2315 distribution includes one set of pixmap pieces in xpm format, in the
2316 directory <samp><span class="file">pixmaps</span></samp>, and one set of bitmap pieces in xbm format,
2317 in the directory <samp><span class="file">bitmaps</span></samp>. Pixmap
2318 pieces give a better appearance on the screen: the white pieces have
2319 dark borders, and the black pieces have opaque internal details. With
2320 bitmaps, neither piece color has a border, and the internal details
2321 are transparent; you see the square color or other background color
2324 <p>If XBoard is configured and compiled on a system that includes libXpm,
2325 the X pixmap library, the xpm pixmap pieces are compiled in as the
2326 default. A different xpm piece set can be selected at runtime with
2327 the <code>pixmapDirectory</code> option, or a bitmap piece set can be selected
2328 with the <code>bitmapDirectory</code> option.
2330 <p>If XBoard is configured and compiled on a system that does not include
2331 libXpm (or the <code>--disable-xpm</code> option is given to the configure
2332 program), the bitmap pieces are compiled in as the default. It is not
2333 possible to use xpm pieces in this case, but pixmap pieces in another
2334 format called "xim" can be used by giving the <code>pixmapDirectory</code> option.
2335 Or again, a different bitmap piece set can be selected with the
2336 <code>bitmapDirectory</code> option.
2338 <p>Files in the <code>bitmapDirectory</code> must be named as follows:
2339 The first character of a piece bitmap name gives the piece it
2340 represents (‘<samp><span class="samp">p</span></samp>’, ‘<samp><span class="samp">n</span></samp>’, ‘<samp><span class="samp">b</span></samp>’, ‘<samp><span class="samp">r</span></samp>’, ‘<samp><span class="samp">q</span></samp>’, or ‘<samp><span class="samp">k</span></samp>’),
2341 the next characters give the size in pixels, the
2342 following character indicates whether the piece is
2343 solid or outline (‘<samp><span class="samp">s</span></samp>’ or ‘<samp><span class="samp">o</span></samp>’),
2344 and the extension is ‘<samp><span class="samp">.bm</span></samp>’.
2345 For example, a solid 80x80 knight would be named <samp><span class="file">n80s.bm</span></samp>.
2346 The outline bitmaps are used only in monochrome mode.
2347 If bitmap pieces are compiled in and the bitmapDirectory is missing
2348 some files, the compiled in pieces are used instead.
2350 <p>If the bitmapDirectory option is given,
2351 it is also possible to replace xboard's icons and menu checkmark,
2352 by supplying files named <samp><span class="file">icon_white.bm</span></samp>, <samp><span class="file">icon_black.bm</span></samp>, and
2353 <samp><span class="file">checkmark.bm</span></samp>.
2355 <p>For more information about pixmap pieces and how to get additional
2356 sets, see <a href="#zic2xpm">zic2xpm</a> below.
2357 <br><dt>-whitePieceColor color<dt>-blackPieceColor color<dt>-lightSquareColor color<dt>-darkSquareColor color<dt>-highlightSquareColor color<dt>-preoveHighlightColor color<dt>-lowTimeWarningColor color<dd><a name="index-Colors-487"></a><a name="index-whitePieceColor_002c-option-488"></a><a name="index-blackPieceColor_002c-option-489"></a><a name="index-lightSquareColor_002c-option-490"></a><a name="index-darkSquareColor_002c-option-491"></a><a name="index-highlightSquareColor_002c-option-492"></a><a name="index-premoveHighlightColor_002c-option-493"></a><a name="index-lowTimeWarningColor_002c-option-494"></a>Colors to use for the pieces, squares, and square highlights.
2360 <pre class="example"> -whitePieceColor #FFFFCC
2361 -blackPieceColor #202020
2362 -lightSquareColor #C8C365
2363 -darkSquareColor #77A26D
2364 -highlightSquareColor #FFFF00
2365 -premoveHighlightColor #FF0000
2366 -lowTimeWarningColor #FF0000
2368 <p>On a grayscale monitor you might prefer:
2370 <pre class="example"> -whitePieceColor gray100
2371 -blackPieceColor gray0
2372 -lightSquareColor gray80
2373 -darkSquareColor gray60
2374 -highlightSquareColor gray100
2375 -premoveHighlightColor gray70
2376 -lowTimeWarningColor gray70
2378 <br><dt>-useBoardTexture true/false<dt>-liteBackTextureFile filename<dt>-darkBackTextureFile filename<dd><a name="index-useBoardTexture_002c-option-495"></a><a name="index-liteBackTextureFile_002c-option-496"></a><a name="index-darkBackTextureFile_002c-option-497"></a>Indicate the pixmap files to be used for drawing the board squares,
2379 and if they should be used rather than using simple colors.
2380 The algorithm for cutting squares out of a given bitmap is such that
2381 the picture is perfectly reproduced when a bitmap the size of
2382 the complete board is given.
2383 Default: false and ""
2384 <br><dt>-drag/-xdrag or -animateDragging true/false<dd><a name="index-drag_002c-option-498"></a><a name="index-animateDragging_002c-option-499"></a>Sets the Animate Dragging menu option. See <a href="#Options-Menu">Options Menu</a>. Default: true.
2385 <br><dt>-animate/-xanimate or -animateMoving true/false<dd><a name="index-animate_002c-option-500"></a><a name="index-animateMoving_002c-option-501"></a>Sets the Animate Moving menu option. See <a href="#Options-Menu">Options Menu</a>. Default: true.
2386 <br><dt>-animateSpeed n<dd><a name="index-g_t_002danimateSpeed_002c-option-502"></a>Number of milliseconds delay between each animation frame when Animate
2388 <br><dt>-autoDisplayComment true/false<dt>-autoDisplayTags true/false<dd><a name="index-g_t_002dautoDisplayComment_002c-option-503"></a><a name="index-g_t_002dautoDisplayTags_002c-option-504"></a>If set to true, these options cause the window with the move comments,
2389 and the window with PGN tags, respectively, to pop up automatically when
2390 such tags or comments are encountered during the replaying a stored or
2391 loaded game. Default: true.
2392 <br><dt>-pasteSelection true/false<dd><a name="index-g_t_002dpasteSelection_002c-option-505"></a>If this option is set to true, the Paste Position and Paste Game
2393 options paste from the currently selected text. If false, they paste
2394 from the clipboard. Default: false.
2395 <br><dt>-autoCopyPV true|false<dd><a name="index-autoCopyPV_002c-option-506"></a>When this option is set, the position displayed on the board when
2396 you terminate a PV walk
2397 (initiated by a right-click on board or engine-output window)
2398 will be automatically put on the clipboard as FEN.
2400 <br><dt>-dropMenu true|false<dd><a name="index-dropMenu_002c-option-507"></a>This option allows you to emulate old behavior,
2401 where the right mouse button brings up the (now deprecated) drop menu
2402 rather than displaying the position at the end of the principal variation.
2404 <br><dt>-pieceMenu true|false<dd><a name="index-pieceMenu_002c-option-508"></a>This option allows you to emulate old behavior,
2405 where the right mouse button brings up the (now deprecated) piece menu
2406 in Edit Position mode.
2407 From this menu you can select the piece to put on the square you
2408 clicked to bring up the menu,
2409 or select items such as <kbd>clear board</kbd>.
2410 You can also <kbd>promote</kbd> or <kbd>demote</kbd> a clicked piece to convert
2411 it into an unorthodox piece that is not directly in the menu,
2412 or give the move to <kbd>black</kbd> or <kbd>white</kbd>.
2413 <br><dt>-variations true|false<dd><a name="index-variations_002c-option-509"></a>When this option is on, you can start new variations in Edit Game or
2414 Analyze mode by holding the Shift key down while entering a move.
2415 When it is off, the Shift key will be ignored.
2417 <br><dt>-absoluteAnalysisScores true|false<dd><a name="index-absoluteAnalysisScores_002c-option-510"></a>When true, scores on the Engine Output window during analysis
2418 will be printed from the white point-of-view, rather than the
2419 side-to-move point-of-view.
2421 <br><dt>-scoreWhite true|false<dd><a name="index-scoreWhite_002c-option-511"></a>When true, scores will always be printed from the white point-of-view,
2422 rather than the side-to-move point-of-view.
2427 <a name="Adjudication-Options"></a>
2429 Next: <a rel="next" accesskey="n" href="#Other-options">Other options</a>,
2430 Previous: <a rel="previous" accesskey="p" href="#User-interface-options">User interface options</a>,
2431 Up: <a rel="up" accesskey="u" href="#Options">Options</a>
2435 <h3 class="section">4.7 Adjudication Options</h3>
2437 <p><a name="index-Options_002c-adjudication-512"></a>
2439 <dt>-adjudicateLossThreshold n<dd><a name="index-adjudicateLossThreshold_002c-option-513"></a>If the given value is non-zero, XBoard adjudicates the game as a loss
2440 if both engines agree for a duration of 6 consecutive ply that the score
2441 is below the given score threshold for that engine. Make sure the score
2442 is interpreted properly by XBoard,
2443 using <code>-firstScoreAbs</code> and <code>-secondScoreAbs</code> if needed.
2444 Default: 0 (no adjudication)
2445 <br><dt>-adjudicateDrawMoves n<dd><a name="index-adjudicateDrawMoves_002c-option-514"></a>If the given value is non-zero, XBoard adjudicates the game as a draw
2446 if after the given number of moves it was not yet decided. Default: 0 (no adjudication)
2447 <br><dt>-checkMates true/false<dd><a name="index-checkMates_002c-option-515"></a>If this option is set, XBoard detects all checkmates and stalemates,
2448 and ends the game as soon as they occur.
2449 Legality-testing must be switched on for this option to work.
2451 <br><dt>-testClaims true/false<dd><a name="index-testClaims_002c-option-516"></a>If this option is set, XBoard verifies all result claims made by engines,
2452 and those who send false claims will forfeit the game because of it.
2453 Legality-testing must be switched on for this option to work. Default: true
2454 <br><dt>-materialDraws true/false<dd><a name="index-materialDraws_002c-option-517"></a>If this option is set, XBoard adjudicates games as draws when there is
2455 no sufficient material left to inflict a checkmate.
2456 This applies to KBKB with like bishops (any number, actually), and to KBK, KNK and KK.
2457 Legality-testing must be switched on for this option to work. Default: true
2458 <br><dt>-trivialDraws true/false<dd><a name="index-trivialDraws_002c-option-518"></a>If this option is set, XBoard adjudicates games as draws that cannot be
2459 usually won without opponent cooperation. This applies to KBKB with unlike bishops,
2460 and to KBKN, KNKN, KNNK, KRKR and KQKQ. The draw is called after 6 ply into these end-games,
2461 to allow quick mates that can occur in some exceptional positions to be found by the engines.
2462 KQKQ does not really belong in this category, and might be taken out in the future.
2463 (When bitbase-based adjudications are implemented.)
2464 Legality-testing must be on for this option to work. Default: false
2465 <br><dt>-ruleMoves n<dd><a name="index-ruleMoves_002c-option-519"></a>If the given value is non-zero, XBoard adjudicates the game as a draw after the given
2466 number of consecutive reversible moves. Engine draw claims are always accepted after 50 moves,
2467 irrespective of the given value of n.
2468 <br><dt>-repeatsToDraw n<dd>If the given value is non-zero, xboard adjudicates the game as a draw if a position
2469 is repeated the given number of times. Engines draw claims are always accepted after 3 repeats,
2470 (on the 3rd occurrence, actually), irrespective of the value of n.
2471 Beware that positions that have different castling or en-passant rights do not count
2472 as repeats, XBoard is fully e.p. and castling aware!
2476 <a name="Other-options"></a>
2478 Previous: <a rel="previous" accesskey="p" href="#Adjudication-Options">Adjudication Options</a>,
2479 Up: <a rel="up" accesskey="u" href="#Options">Options</a>
2483 <h3 class="section">4.8 Other options</h3>
2485 <p><a name="index-Options_002c-miscellaneous-520"></a>
2487 <dt>-ncp/-xncp or -noChessProgram true/false<dd><a name="index-ncp_002c-option-521"></a><a name="index-noChessProgram_002c-option-522"></a>If this option is true, XBoard acts as a passive chessboard; it
2488 does not start a chess engine at all. Turning on this option
2489 also turns off clockMode. Default: false.
2490 <br><dt>-mode or -initialMode modename<dd><a name="index-mode_002c-option-523"></a><a name="index-initalMode_002c-option-524"></a>If this option is given, XBoard selects the given modename
2491 from the Mode menu after starting and (if applicable) processing the
2492 loadGameFile or loadPositionFile option. Default: "" (no selection).
2493 Other supported values are
2494 MachineWhite, MachineBlack, TwoMachines, Analysis,
2495 AnalyzeFile, EditGame, EditPosition, and Training.
2496 <br><dt>-variant varname<dd><a name="index-variant_002c-option-525"></a>Activates preliminary, partial support for playing chess variants
2497 against a local engine or editing variant games. This flag is not
2498 needed in ICS mode. Recognized variant names are:
2500 <pre class="example"> normal Normal chess
2501 wildcastle Shuffle chess, king can castle from d file
2502 nocastle Shuffle chess, no castling allowed
2503 fischerandom Fischer Random shuffle chess
2504 bughouse Bughouse, ICC/FICS rules
2505 crazyhouse Crazyhouse, ICC/FICS rules
2506 losers Lose all pieces or get mated (ICC wild 17)
2507 suicide Lose all pieces including king (FICS)
2508 giveaway Try to have no legal moves (ICC wild 26)
2509 twokings Weird ICC wild 9
2510 kriegspiel Opponent's pieces are invisible
2511 atomic Capturing piece explodes (ICC wild 27)
2512 3check Win by giving check 3 times (ICC wild 25)
2513 shatranj An ancient precursor of chess (ICC wild 28)
2514 xiangqi Chinese Chess (on a 9x10 board)
2515 shogi Japanese Chess (on a 9x9 board & piece drops)
2516 capablanca Capablanca Chess (10x8 board, with Archbishop
2517 and Chancellor pieces)
2518 gothic similar, with a better initial position
2519 caparandom An FRC-like version of Capablanca Chess (10x8)
2520 janus A game with two Archbishops (10x8 board)
2521 courier Medieval intermediate between shatranj and
2522 modern Chess (on 12x8 board)
2523 falcon Patented 10x8 variant with two Falcon pieces
2524 berolina Pawns capture straight ahead, and move diagonal
2525 cylinder Pieces wrap around the board edge
2526 knightmate King moves as Knight, and vice versa
2527 super Superchess (shuffle variant with 4 exo-pieces)
2528 makruk Thai Chess (shatranj-like, P promotes on 6th rank)
2529 spartan Spartan Chess (black has unorthodox pieces)
2530 fairy A catchall variant in which all piece types
2531 known to XBoard can participate (8x8)
2532 unknown Catchall for other unknown variants
2534 <p>NOT ALL BOARDSIZES PROVIDE A COMPLETE SET OF BUILT-IN BITMAPS FOR ALL
2535 UN-ORTHODOX PIECES, though. Only in <code>boardSize</code> middling and bulky
2536 all 22 piece types are provided, while -boardSize petite has most
2537 of them. Archbishop, Chancellor and Amazon are supported in every
2538 size from petite to bulky. Kings or Amazons are substituted for
2539 missing bitmaps. You can still play variants needing un-orthodox
2540 pieces in other board sizes providing your own bitmaps through the
2541 <code>bitmapDirectory</code> or <code>pixmapDirectory</code> options.
2543 <p>In the shuffle variants, XBoard now does shuffle the pieces, although
2544 you can still do it by hand using Edit Position. Some variants are
2545 supported only in ICS mode, including bughouse, and
2546 kriegspiel. The winning/drawing conditions in crazyhouse (off-board
2547 interposition on mate) are not fully understood, but losers, suicide,
2548 giveaway, atomic, and 3check should be OK.
2549 Berolina and cylinder chess can only be played with legality testing off.
2550 In crazyhouse, XBoard now does keep
2551 track of off-board pieces. In shatranj it does implement the baring
2552 rule when mate detection is switched on.
2553 <br><dt>-boardHeight N<dd><a name="index-boardHeight_002c-option-526"></a>Allows you to set a non-standard number of board ranks in any variant.
2554 If the height is given as -1, the default height for the variant is used.
2556 <br><dt>-boardWidth N<dd><a name="index-boardWidth_002c-option-527"></a>Allows you to set a non-standard number of board files in any variant.
2557 If the width is given as -1, the default width for the variant is used.
2558 With a non-standard width, the initial position will always be an empty board,
2559 as the usual opening array will not fit.
2561 <br><dt>-holdingsSize N<dd><a name="index-holdingsSize_002c-option-528"></a>Allows you to set a non-standard size for the holdings in any variant.
2562 If the size is given as -1, the default holdings size for the variant is used.
2563 The first N piece types will go into the holdings on capture, and you will be
2564 able to drop them on the board in stead of making a normal move. If size equals 0,
2565 there will be no holdings.
2567 <br><dt>-defaultFrcPosition N<dd><a name="index-defaultFrcPosition_002c-option-529"></a>Specifies the number of the opening position in shuffle games like Chess960.
2568 A value of -1 means the position is randomly generated by XBoard
2569 at the beginning of every game.
2571 <br><dt>-pieceToCharTable string<dd><a name="index-pieceToCharTable_002c-option-530"></a>The characters that are used to represent the piece types XBoard knows in FEN
2572 diagrams and SAN moves. The string argument has to have an even length
2573 (or it will be ignored), as white and black pieces have to be given separately
2574 (in that order). The last letter for each color will be the King.
2575 The letters before that will be PNBRQ and then a whole host of fairy pieces
2576 in an order that has not fully crystallized yet (currently FEACWMOHIJGDVSLU,
2577 F=Ferz, Elephant, A=Archbishop, C=Chancellor, W=Wazir, M=Commoner, O=Cannon,
2578 H=Nightrider). You should list at least all pieces that occur in the variant
2579 you are playing. If you have less than 44 characters in the string, the pieces
2580 not mentioned will get assigned a period, and you will not be able to distinguish
2581 them in FENs. You can also explicitly assign pieces a period, in which case they
2582 will not be counted in deciding which captured pieces can go into the holdings.
2583 A tilde '~' as a piece name does mean this piece is used to represent a promoted
2584 Pawn in crazyhouse-like games, i.e. on capture it turns back onto a Pawn.
2585 A '+' similarly indicates the piece is a shogi-style promoted piece, that should
2586 revert to its non-promoted version on capture (rather than to a Pawn).
2587 Note that promoted pieces are represented by pieces 11 further in the list.
2588 You should not have to use this option often: each variant has its own default
2589 setting for the piece representation in FEN, which should be sufficient in normal use.
2591 <br><dt>-pieceNickNames string<dd><a name="index-pieceNickNames_002c-option-531"></a>The characters in the string are interpreted the same way as in the
2592 <code>pieceToCharTable</code> option. But on input, piece-ID letters are
2593 first looked up in the nicknames, and only if not defined there,
2594 in the normal pieceToCharTable. This allows you to have two letters
2595 designate the same piece, (e.g. N as an alternative to H for Horse
2596 in Xiangqi), to make reading of non-compliant notations easier.
2598 <br><dt>-colorNickNames string<dd><a name="index-colorNickNames_002c-option-532"></a>The side-to-move field in a FEN will be first matched against the letters
2599 in the string (first character for white, second for black),
2600 before it is matched to the regular 'w' and 'b'.
2601 This makes it easier to read non-compliant FENs,
2602 which, say, use 'r' for white.
2604 <br><dt>-debug/-xdebug or -debugMode true/false<dd><a name="index-debug_002c-option-533"></a><a name="index-debugMode_002c-option-534"></a>Turns on debugging printout.
2605 <br><dt>-debugFile filename or -nameOfDebugFile filename<dd><a name="index-debugFile_002c-option-535"></a><a name="index-nameOfDebugFile_002c-option-536"></a>Sets the name of the file to which XBoard saves debug information
2606 (including all communication to and from the engines).
2607 A <kbd>%d</kbd> in the given file name (e.g. game%d.debug) will be replaced
2608 by the unique sequence number of a tournament game,
2609 so that the debug output of each game will be written on a separate file.
2610 <br><dt>-engineDebugOutput number<dd><a name="index-engineDebugOutput_002c-option-537"></a>Specifies how XBoard should handle unsolicited output from the engine,
2611 with respect to saving it in the debug file.
2612 The output is further (hopefully) ignored.
2613 If number=0, XBoard refrains from writing such spurious output to the debug file.
2614 If number=1, all engine output is written faithfully to the debug file.
2615 If number=2, any protocol-violating line is prefixed with a '#' character,
2616 as the engine itself should have done if it wanted to submit info for inclusion in the debug file.
2617 This option is provided for the benefit of applications that use the debug file
2618 as a source of information, such as the broadcaster of live games TLCV / TLCS.
2619 Such applications can be protected from spurious engine output that might otherwise confuse them.
2620 <br><dt>-rsh or -remoteShell shell-name<dd><a name="index-rsh_002c-option-538"></a><a name="index-remoteShell_002c-option-539"></a>Name of the command used to run programs remotely. The default
2621 is <samp><span class="file">rsh</span></samp> or <samp><span class="file">remsh</span></samp>, determined when XBoard is
2622 configured and compiled.
2623 <br><dt>-ruser or -remoteUser user-name<dd><a name="index-ruser_002c-option-540"></a><a name="index-remoteUser_002c-option-541"></a>User name on the remote system when running programs with the
2624 <code>remoteShell</code>. The default is your local user name.
2625 <br><dt>-userName username<dd><a name="index-userName_002c-option-542"></a>Name under which the Human player will be listed in the PGN file.
2626 Default is the login name on your local computer.
2627 <br><dt>-delayBeforeQuit number<dt>-delayAfterQuit number<dd><a name="index-delayBeforeQuit_002c-option-543"></a><a name="index-delayAfterQuit_002c-option-544"></a>These options specify how long XBoard has to wait before sending a termination signal to rogue engine processes, that do not want to react to the 'quit' command. The second one determines the pause after killing the engine, to make sure it dies.
2628 <br><dt>-searchMode n<dd><a name="index-searchMode_002c-option-545"></a>The integer n encodes the mode for the ‘<samp><span class="samp">find position</span></samp>’ function.
2629 Default: 1 (= Exact position match)
2630 <br><dt>-eloThresholdBoth elo<dt>-eloThresholdAny elo<dd><a name="index-eloThresholdBoth_002c-option-546"></a><a name="index-eloThresholdAny_002c-option-547"></a>Defines a lower limit for the Elo rating, which has to be surpassed
2631 before a game will be considered when searching for a board position.
2633 <br><dt>-dateThreshold year<dd><a name="index-dateThreshold_002c-option-548"></a>Only games not played before the given year will be considered when
2634 searching for a board position
2639 <a name="Chess-Servers"></a>
2641 Next: <a rel="next" accesskey="n" href="#Firewalls">Firewalls</a>,
2642 Previous: <a rel="previous" accesskey="p" href="#Options">Options</a>,
2643 Up: <a rel="up" accesskey="u" href="#Top">Top</a>
2647 <h2 class="chapter">5 Chess Servers</h2>
2649 <p><a name="index-ICS-549"></a><a name="index-ICS_002c-addresses-550"></a><a name="index-Internet-Chess-Server-551"></a>An <dfn>Internet Chess Server</dfn>, or <dfn>ICS</dfn>, is a place on the
2650 Internet where people can get together to play chess, watch other
2651 people's games, or just chat. You can use either <code>telnet</code> or a
2652 client program like XBoard to connect to the server. There are
2653 thousands of registered users on the different ICS hosts, and it is
2654 not unusual to meet 200 on both chessclub.com and freechess.org.
2656 <p>Most people can just type <kbd>xboard -ics</kbd> to start XBoard as an ICS
2657 client. Invoking XBoard in this way connects you to the Internet
2658 Chess Club (ICC), a commercial ICS. You can log in there as a guest
2659 even if you do not have a paid account. To connect to the largest
2660 Free ICS (FICS), use the command <kbd>xboard -ics -icshost freechess.org</kbd>
2661 instead, or substitute a different host name to connect to your
2663 For a full description of command-line options that control
2664 the connection to ICS and change the default values of ICS options, see
2665 <a href="#ICS-options">ICS options</a>.
2667 <p>While you are running XBoard as an ICS client,
2668 you use the terminal window that you started XBoard from
2669 as a place to type in commands and read information that is
2670 not available on the chessboard.
2672 <p>The first time you need to use the terminal is to enter your login name
2673 and password, if you are a registered player. (You don't need to do
2674 this manually; the <code>icsLogon</code> option can do it for you.
2675 see <a href="#ICS-options">ICS options</a>.) If you are not registered,
2676 enter <kbd>g</kbd> as your name, and the server will pick a
2677 unique guest name for you.
2679 <p>Some useful ICS commands
2682 <dt><kbd>help <topic></kbd><dd><a name="index-help_002c-ICS-command-552"></a>to get help on the given <topic>. To get a list of possible topics type
2683 <dfn>help</dfn> without topic. Try the help command before you ask other
2684 people on the server for help.
2686 <p>For example <kbd>help register</kbd> tells you how to become a registered
2688 <br><dt><kbd>who <flags></kbd><dd><a name="index-who_002c-ICS-command-553"></a>to see a list of people who are logged on. Administrators
2689 (people you should talk to if you have a problem) are marked
2690 with the character ‘<samp><span class="samp">*</span></samp>’, an asterisk. The <flags> allow you to
2691 display only selected players: For example, <kbd>who of</kbd> shows a
2692 list of players who are interested in playing but do not have
2694 <br><dt><kbd>games</kbd><dd><a name="index-games_002c-ICS-command-554"></a>to see what games are being played
2695 <br><dt><kbd>match <player> [<mins>] [<inc>]</kbd><dd>to challenge another player to a game. Both opponents get <mins> minutes
2696 for the game, and <inc> seconds will be added after each move.
2697 If another player challenges you, the server asks if you want to
2698 accept the challenge; use the <kbd>accept</kbd> or <kbd>decline</kbd> commands
2700 <br><dt><kbd>accept</kbd><dt><kbd>decline</kbd><dd><a name="index-accept_002c-ICS-command-555"></a><a name="index-decline_002c-ICS-command-556"></a>to accept or decline another player's offer.
2701 The offer may be to start a new game, or to agree to a
2702 <kbd>draw</kbd>, <kbd>adjourn</kbd> or <kbd>abort</kbd> the current game. See <a href="#Action-Menu">Action Menu</a>.
2704 <p>If you have more than one pending offer (for example, if more than one player
2705 is challenging you, or if your opponent offers both a draw and to adjourn the
2706 game), you have to supply additional information, by typing something
2707 like <kbd>accept <player></kbd>, <kbd>accept draw</kbd>, or <kbd>draw</kbd>.
2708 <br><dt><kbd>draw</kbd><dt><kbd>adjourn</kbd><dt><kbd>abort</kbd><dd><a name="index-draw_002c-ICS-command-557"></a><a name="index-adjourn_002c-ICS-command-558"></a><a name="index-abort_002c-ICS-command-559"></a>asks your opponent to terminate a game by mutual agreement. Adjourned
2709 games can be continued later.
2710 Your opponent can either <kbd>decline</kbd> your offer or accept it (by typing the
2711 same command or typing <kbd>accept</kbd>). In some cases these commands work
2712 immediately, without asking your opponent to agree. For example, you can
2713 abort the game unilaterally if your opponent is out of time, and you can claim
2714 a draw by repetition or the 50-move rule if available simply by typing
2716 <br><dt><kbd>finger <player></kbd><dd><a name="index-finger_002c-ICS-command-560"></a>to get information about the given <player>. (Default: yourself.)
2717 <br><dt><kbd>vars</kbd><dd><a name="index-vars_002c-ICS-command-561"></a>to get a list of personal settings
2718 <br><dt><kbd>set <var> <value></kbd><dd><a name="index-set_002c-ICS-command-562"></a>to modify these settings
2719 <br><dt><kbd>observe <player></kbd><dd><a name="index-observe_002c-ICS-command-563"></a>to observe an ongoing game of the given <player>.
2720 <br><dt><kbd>examine</kbd><dt><kbd>oldmoves</kbd><dd><a name="index-examine_002c-ICS-command-564"></a><a name="index-oldmoves_002c-ICS-command-565"></a>to review a recently completed game
2723 <p>Some special XBoard features are activated when you are
2724 in examine mode on ICS. See the descriptions of the menu commands
2725 ‘<samp><span class="samp">Forward</span></samp>’, ‘<samp><span class="samp">Backward</span></samp>’, ‘<samp><span class="samp">Pause</span></samp>’, ‘<samp><span class="samp">ICS Client</span></samp>’,
2726 and ‘<samp><span class="samp">Stop Examining</span></samp>’ on the <a href="#Edit-Menu">Edit Menu</a>, <a href="#Mode-Menu">Mode Menu</a>, and
2727 <a href="#Action-Menu">Action Menu</a>.
2730 <a name="Firewalls"></a>
2732 Next: <a rel="next" accesskey="n" href="#Environment">Environment</a>,
2733 Previous: <a rel="previous" accesskey="p" href="#Chess-Servers">Chess Servers</a>,
2734 Up: <a rel="up" accesskey="u" href="#Top">Top</a>
2738 <h2 class="chapter">6 Firewalls</h2>
2740 <p>By default, XBoard communicates with an Internet Chess Server
2741 by opening a TCP socket directly from the machine it is running on
2742 to the ICS. If there is a firewall between your machine and the ICS,
2743 this won't work. Here are some recipes for getting around common
2744 kinds of firewalls using special options to XBoard.
2745 Important: See the paragraph in the below about extra echoes, in
2746 <a href="#Limitations">Limitations</a>.
2748 <p>Suppose that you can't telnet directly to ICS, but you can telnet
2749 to a firewall host, log in, and then telnet from there to ICS.
2750 Let's say the firewall is called ‘<samp><span class="samp">firewall.example.com</span></samp>’. Set
2751 command-line options as follows:
2753 <pre class="example"> xboard -ics -icshost firewall.example.com -icsport 23
2755 <p class="noindent">Or in your <samp><span class="file">.Xresources</span></samp> file:
2757 <pre class="example"> XBoard*internetChessServerHost: firewall.example.com
2758 XBoard*internetChessServerPort: 23
2760 <p class="noindent">Then when you run XBoard in ICS mode, you will be prompted
2761 to log in to the firewall host. This works because port 23 is the
2762 standard telnet login service. Do so, then telnet to ICS, using a
2763 command like ‘<samp><span class="samp">telnet chessclub.com 5000</span></samp>’, or whatever command
2764 the firewall provides for telnetting to port 5000.
2766 <p>If your firewall lets you telnet (or rlogin) to remote hosts but
2767 doesn't let you telnet to port 5000, you may be able to connect to the
2768 chess server on port 23 instead, which is the port the telnet program
2769 uses by default. Some chess servers support this (including
2770 chessclub.com and freechess.org), while some do not.
2772 <p>If your chess server does not allow connections on port 23 and your
2773 firewall does not allow you to connect to other ports, you may be able
2774 to connect by hopping through another host outside the firewall that
2775 you have an account on. For instance, suppose you have a shell
2776 account at ‘<samp><span class="samp">foo.edu</span></samp>’. Follow the recipe above, but instead of
2777 typing ‘<samp><span class="samp">telnet chessclub.com 5000</span></samp>’ to the firewall, type
2778 ‘<samp><span class="samp">telnet foo.edu</span></samp>’ (or ‘<samp><span class="samp">rlogin foo.edu</span></samp>’), log in there, and
2779 then type ‘<samp><span class="samp">telnet chessclub.com 5000</span></samp>’.
2781 <p>Suppose that you can't telnet directly to ICS, but you can use rsh
2782 to run programs on a firewall host, and that host can telnet to ICS.
2783 Let's say the firewall is called ‘<samp><span class="samp">rsh.example.com</span></samp>’. Set
2784 command-line options as follows:
2786 <pre class="example"> xboard -ics -gateway rsh.example.com -icshost chessclub.com
2788 <p class="noindent">Or in your <samp><span class="file">.Xresources</span></samp> file:
2790 <pre class="example"> XBoard*gateway: rsh.example.com
2791 XBoard*internetChessServerHost: chessclub.com
2793 <p>Then when you run XBoard in ICS mode, it will connect to
2794 the ICS by using <samp><span class="file">rsh</span></samp> to run the command
2795 ‘<samp><span class="samp">telnet chessclub.com 5000</span></samp>’ on host ‘<samp><span class="samp">rsh.example.com</span></samp>’.
2797 <p>Suppose that you can telnet anywhere you want, but you have to
2798 run a special program called <samp><span class="file">ptelnet</span></samp> to do so.
2800 <p>First, we'll consider the easy case, in which
2801 ‘<samp><span class="samp">ptelnet chessclub.com 5000</span></samp>’ gets you to the chess server.
2802 In this case set command line options as follows:
2804 <pre class="example"> xboard -ics -telnet -telnetProgram ptelnet
2806 <p class="noindent">Or in your <samp><span class="file">.Xresources</span></samp> file:
2808 <pre class="example"> XBoard*useTelnet: true
2809 XBoard*telnetProgram: ptelnet
2811 <p class="noindent">Then when you run XBoard in ICS mode, it will issue the
2812 command ‘<samp><span class="samp">ptelnet chessclub.com 5000</span></samp>’ to connect to the ICS.
2814 <p>Next, suppose that ‘<samp><span class="samp">ptelnet chessclub.com 5000</span></samp>’ doesn't work;
2815 that is, your <samp><span class="file">ptelnet</span></samp> program doesn't let you connect to
2816 alternative ports. As noted above, your chess server may allow you to
2817 connect on port 23 instead. In that case, just add the option
2818 ‘<samp><span class="samp">-icsport ""</span></samp>’ to the above command, or add
2819 ‘<samp><span class="samp">XBoard*internetChessServerPort:</span></samp>’ to your <samp><span class="file">.Xresources</span></samp> file.
2820 But if your chess server doesn't let you connect on port 23, you will have
2821 to find some other host outside the firewall and hop through it. For
2822 instance, suppose you have a shell account at ‘<samp><span class="samp">foo.edu</span></samp>’. Set
2823 command line options as follows:
2825 <pre class="example"> xboard -ics -telnet -telnetProgram ptelnet -icshost foo.edu -icsport ""
2827 <p class="noindent">Or in your <samp><span class="file">.Xresources</span></samp> file:
2829 <pre class="example"> XBoard*useTelnet: true
2830 XBoard*telnetProgram: ptelnet
2831 XBoard*internetChessServerHost: foo.edu
2832 XBoard*internetChessServerPort:
2834 <p class="noindent">Then when you run XBoard in ICS mode, it will issue the
2835 command ‘<samp><span class="samp">ptelnet foo.edu</span></samp>’ to connect to your account at
2836 ‘<samp><span class="samp">foo.edu</span></samp>’. Log in there, then type ‘<samp><span class="samp">telnet chessclub.com 5000</span></samp>’.
2838 <p>ICC timestamp and FICS timeseal do not work through some
2839 firewalls. You can use them only if your firewall gives a clean TCP
2840 connection with a full 8-bit wide path. If your firewall allows you
2841 to get out only by running a special telnet program, you can't use
2842 timestamp or timeseal across it. But if you have access to a
2843 computer just outside your firewall, and you have much lower netlag
2844 when talking to that computer than to the ICS, it might be worthwhile
2845 running timestamp there. Follow the instructions above for hopping
2846 through a host outside the firewall (foo.edu in the example),
2847 but run timestamp or timeseal on that host instead of telnet.
2849 <p>Suppose that you have a SOCKS firewall that will give you a clean
2850 8-bit wide TCP connection to the chess server, but only after you
2851 authenticate yourself via the SOCKS protocol. In that case, you could
2852 make a socksified version of XBoard and run that. If you are using
2853 timestamp or timeseal, you will to socksify it, not XBoard; this may
2854 be difficult seeing that ICC and FICS do not provide source code for
2855 these programs. Socksification is beyond the scope of this document,
2856 but see the SOCKS Web site at http://www.socks.permeo.com/.
2857 If you are missing SOCKS, try http://www.funbureau.com/.
2860 <a name="Environment"></a>
2862 Next: <a rel="next" accesskey="n" href="#Limitations">Limitations</a>,
2863 Previous: <a rel="previous" accesskey="p" href="#Firewalls">Firewalls</a>,
2864 Up: <a rel="up" accesskey="u" href="#Top">Top</a>
2868 <h2 class="chapter">7 Environment variables</h2>
2870 <p><a name="index-Environment-variables-566"></a><a name="index-CHESSDIR-567"></a>Game and position files are found in a directory named by the
2871 <code>CHESSDIR</code> environment variable. If this variable is not set, the
2872 current working directory is used. If <code>CHESSDIR</code> is set,
2873 XBoard actually changes its working directory to
2874 <code>$CHESSDIR</code>, so any files written by the chess engine
2875 will be placed there too.
2878 <a name="Limitations"></a>
2880 Next: <a rel="next" accesskey="n" href="#Problems">Problems</a>,
2881 Previous: <a rel="previous" accesskey="p" href="#Environment">Environment</a>,
2882 Up: <a rel="up" accesskey="u" href="#Top">Top</a>
2886 <h2 class="chapter">8 Limitations and known bugs</h2>
2888 <p><a name="index-Limitations-568"></a><a name="index-Bugs-569"></a>There is no way for two people running copies of XBoard to play
2889 each other without going through an Internet Chess Server.
2891 <p>Under some circumstances, your ICS password may be echoed when you log on.
2893 <p>If you are connecting to the ICS by running telnet on an Internet
2894 provider or firewall host, you may find that each line you type is
2895 echoed back an extra time after you hit <Enter>. If your Internet
2896 provider is a Unix system, you can probably turn its echo off by
2897 typing <kbd>stty -echo</kbd> after you log in, and/or typing
2898 <^E><Enter> (Ctrl+E followed by the Enter key) to the telnet
2899 program after you have logged into ICS. It is a good idea to do this
2900 if you can, because the extra echo can occasionally confuse XBoard's
2903 <p>The game parser recognizes only algebraic notation.
2905 <p>Many of the following points used to be limitations in XBoard 4.2.7 and earlier,
2907 The internal move legality tester in XBoard 4.3.xx does look at the game history,
2908 and is fully aware of castling or en-passant-capture rights. It permits castling with
2909 the king on the d file because this is possible in some "wild 1" games on ICS.
2910 The piece-drop menu does not check piece drops in bughouse to see if you actually hold
2911 the piece you are trying to drop. But this way of dropping pieces should be considered
2912 an obsolete feature, now that pieces can be dropped by dragging them from the holdings
2913 to the board. Anyway, if you would attempt an illegal move when using a chess engine or the ICS,
2914 XBoard will accept the error message that comes back, undo the move, and let you try another.
2915 FEN positions saved by XBoard do include correct information about whether castling or
2916 en passant are legal, and also handle the 50-move counter.
2917 The mate detector does not understand that non-contact mate is not really mate in bughouse.
2918 The only problem this causes while playing is minor: a "#" (mate indicator) character will
2919 show up after a non-contact mating move in the move list. XBoard will not assume the game
2920 is over at that point, not even when the option Detect Mates is on.
2921 Edit Game mode always uses the rules of the selected variant,
2922 which can be a variant that uses piece drops.
2923 You can load and edit games that contain piece drops.
2924 The (obsolete) piece menus are not active,
2925 but you can perform piece drops by dragging pieces from the holdings.
2926 Fischer Random castling is fully understood.
2927 You can enter castlings by dragging the King on top of your Rook.
2928 You can probably also play Fischer Random successfully on ICS by typing
2929 castling moves into the ICS Interaction window.
2931 <p>The menus may not work if your keyboard is in Caps Lock or Num Lock mode.
2932 This seems to be a problem with the Athena menu widget,
2935 <p>Also see the ToDo file included with the distribution for many other
2936 possible bugs, limitations, and ideas for improvement that have been
2939 <a name="Problems"></a>
2941 Next: <a rel="next" accesskey="n" href="#Contributors">Contributors</a>,
2942 Previous: <a rel="previous" accesskey="p" href="#Limitations">Limitations</a>,
2943 Up: <a rel="up" accesskey="u" href="#Top">Top</a>
2947 <h2 class="chapter">9 Reporting problems</h2>
2949 <p><a name="index-Bugs-570"></a><a name="index-Bug-reports-571"></a><a name="index-Reporting-bugs-572"></a><a name="index-Problems-573"></a><a name="index-Reporting-problems-574"></a>
2950 You can report bugs and problems with XBoard using
2951 the bug tracker at <code>https://savannah.gnu.org/projects/xboard/</code>
2952 or by sending mail to <code><bug-xboard@gnu.org></code>. It can also
2953 be useful to report or discuss bugs in the WinBoard Forum at
2954 <code>http://www.open-aurec.com/wbforum/</code>,
2955 WinBoard development section.
2957 <p>Please use the <samp><span class="file">script</span></samp> program to start a typescript, run
2958 XBoard with the ‘<samp><span class="samp">-debug</span></samp>’ option, and include the typescript
2959 output in your message.
2960 Also tell us what kind of machine and what operating system version
2961 you are using. The command ‘<samp><span class="samp">uname -a</span></samp>’ will often tell you this.
2963 <p>If you improve XBoard, please send a message about your changes,
2964 and we will get in touch with you about merging them in
2965 to the main line of development.
2968 <a name="Contributors"></a>
2970 Next: <a rel="next" accesskey="n" href="#CMail">CMail</a>,
2971 Previous: <a rel="previous" accesskey="p" href="#Problems">Problems</a>,
2972 Up: <a rel="up" accesskey="u" href="#Top">Top</a>
2976 <h2 class="chapter">10 Authors and contributors</h2>
2978 <p><a name="index-Authors-575"></a><a name="index-Contributors-576"></a>
2979 Chris Sears and Dan Sears wrote the original XBoard. They were
2980 responsible for versions 1.0 through 1.2. The color scheme was taken
2981 from Wayne Christopher's <code>XChess</code> program.
2983 <p>Tim Mann was primarily responsible for XBoard versions 1.3 through
2984 4.2.7, and for WinBoard (a port of XBoard to Microsoft Win32) from its
2985 inception through version 4.2.7.
2987 <p>John Chanak contributed the initial implementation of ICS mode. Evan
2988 Welsh wrote <code>CMail</code>, and Patrick Surry helped in designing,
2989 testing, and documenting it. Elmar Bartel contributed the new piece
2990 bitmaps introduced in version 3.2. Jochen Wiedmann converted the
2991 documentation to texinfo. Frank McIngvale added click/click moving,
2992 the Analysis modes, piece flashing, ZIICS import, and ICS text
2993 colorization to XBoard. Hugh Fisher added animated piece movement to
2994 XBoard, and Henrik Gram added it to WinBoard. Mark Williams
2995 contributed the initial (WinBoard-only) implementation of many new
2996 features added to both XBoard and WinBoard in version 4.1.0, including
2997 copy/paste, premove, icsAlarm, autoFlipView, training mode, auto
2998 raise, and blindfold. Ben Nye contributed X copy/paste code for
3001 <p>In a fork from version 4.2.7, Alessandro Scotti added many elements to
3002 the user interface of WinBoard, including the board textures and
3003 font-based rendering, the evaluation-graph, move-history and
3004 engine-output window. He was also responsible for adding the UCI
3007 <p>H. G. Muller continued this fork of the project, producing version
3008 4.3. He made WinBoard castling- and e.p.-aware, added variant support
3009 with adjustable board sizes, the crazyhouse holdings, and the fairy
3010 pieces. In addition he added most of the adjudication options, made
3011 WinBoard more robust in dealing with buggy and crashing engines, and
3012 extended time control with a time-odds and node-count-based modes.
3013 Most of the options that initially were WinBoard only have now been
3014 back-ported to XBoard.
3016 <p>Michel van den Bergh provided the code for reading Polyglot opening books.
3018 <p>Meanwhile, some work continued on the GNU XBoard project maintained at
3019 savannah.gnu.org, but version 4.2.8 was never released. Daniel
3020 Mehrmann was responsible for much of this work.
3022 <p>Most recently, Arun Persaud worked with H. G. Muller to merge all
3023 the features of the never-released XBoard/WinBoard 4.2.8 of the GNU
3024 XBoard project and the never-released 4.3.16 from H. G.'s fork into a
3025 unified XBoard/WinBoard 4.4, which is now available both from the
3026 savannah.gnu.org web site and the WinBoard forum.
3029 <a name="CMail"></a>
3031 Next: <a rel="next" accesskey="n" href="#Other-programs">Other programs</a>,
3032 Previous: <a rel="previous" accesskey="p" href="#Contributors">Contributors</a>,
3033 Up: <a rel="up" accesskey="u" href="#Top">Top</a>
3037 <h2 class="chapter">11 CMail</h2>
3039 <p><a name="index-cmail-577"></a>The <samp><span class="file">cmail</span></samp> program can help you play chess by email with opponents of
3040 your choice using XBoard as an interface.
3042 <p>You will usually run <samp><span class="file">cmail</span></samp> without giving any options.
3045 <li><a accesskey="1" href="#CMail-options">CMail options</a>: Invoking CMail.
3046 <li><a accesskey="2" href="#CMail-game">CMail game</a>: Starting a CMail game.
3047 <li><a accesskey="3" href="#CMail-answer">CMail answer</a>: Answering a move.
3048 <li><a accesskey="4" href="#CMail-multi">CMail multi</a>: Multiple games in one message.
3049 <li><a accesskey="5" href="#CMail-completion">CMail completion</a>: Completing a game.
3050 <li><a accesskey="6" href="#CMail-trouble">CMail trouble</a>: Known CMail problems.
3054 <a name="CMail-options"></a>
3056 Next: <a rel="next" accesskey="n" href="#CMail-game">CMail game</a>,
3057 Up: <a rel="up" accesskey="u" href="#CMail">CMail</a>
3061 <h3 class="section">11.1 CMail options</h3>
3064 <dt>-h<dd>Displays <samp><span class="file">cmail</span></samp> usage information.
3065 <br><dt>-c<dd>Shows the conditions of the GNU General Public License.
3066 See <a href="#Copying">Copying</a>.
3067 <br><dt>-w<dd>Shows the warranty notice of the GNU General Public License.
3068 See <a href="#Copying">Copying</a>.
3069 <br><dt>-v<dt>-xv<dd>Provides or inhibits verbose output from <samp><span class="file">cmail</span></samp> and XBoard,
3070 useful for debugging. The
3072 form also inhibits the cmail introduction message.
3073 <br><dt>-mail<dt>-xmail<dd>Invokes or inhibits the sending of a mail message containing the move.
3074 <br><dt>-xboard<dt>-xxboard<dd>Invokes or inhibits the running of XBoard on the game file.
3075 <br><dt>-reuse<dt>-xreuse<dd>Invokes or inhibits the reuse of an existing XBoard to display the
3077 <br><dt>-remail<dd>Resends the last mail message for that game. This inhibits running
3079 <br><dt>-game <name><dd>The name of the game to be processed.
3080 <br><dt>-wgames <number><dt>-bgames <number><dt>-games <number><dd>Number of games to start as White, as Black or in total. Default is 1 as
3081 white and none as black. If only one color is specified then none of the
3082 other color is assumed. If no color is specified then equal numbers of
3083 White and Black games are started, with the extra game being as White if an
3084 odd number of total games is specified.
3085 <br><dt>-me <short name><dt>-opp <short name><dd>A one-word alias for yourself or your opponent.
3086 <br><dt>-wname <full name><dt>-bname <full name><dt>-myname <full name><dt>-oppname <full name><dd>The full name of White, Black, yourself or your opponent.
3087 <br><dt>-wna <net address><dt>-bna <net address><dt>-na <net address><dt>-oppna <net address><dd>The email address of White, Black, yourself or your opponent.
3088 <br><dt>-dir <directory><dd>The directory in which <samp><span class="file">cmail</span></samp> keeps its files. This defaults to the
3089 environment variable <code>$CMAIL_DIR</code> or failing that, <code>$CHESSDIR</code>,
3090 <samp><span class="file">$HOME/Chess</span></samp> or <samp><span class="file">~/Chess</span></samp>. It will be created if it does not exist.
3091 <br><dt>-arcdir <directory><dd>The directory in which <samp><span class="file">cmail</span></samp> archives completed games. Defaults to
3092 the environment variable <code>$CMAIL_ARCDIR</code> or, in its absence, the same
3093 directory as cmail keeps its working files (above).
3094 <br><dt>-mailprog <mail program><dd>The program used by cmail to send email messages. This defaults to the
3095 environment variable <code>$CMAIL_MAILPROG</code> or failing that
3096 <samp><span class="file">/usr/ucb/Mail</span></samp>, <samp><span class="file">/usr/ucb/mail</span></samp> or <samp><span class="file">Mail</span></samp>. You will need
3097 to set this variable if none of the above paths fit your system.
3098 <br><dt>-logFile <file><dd>A file in which to dump verbose debugging messages that are invoked with
3099 the ‘<samp><span class="samp">-v</span></samp>’
3101 <br><dt>-event <event><dd>The PGN Event tag (default ‘<samp><span class="samp">Email correspondence game</span></samp>’).
3102 <br><dt>-site <site><dd>The PGN Site tag (default ‘<samp><span class="samp">NET</span></samp>’).
3103 <br><dt>-round <round><dd>The PGN Round tag (default ‘<samp><span class="samp">-</span></samp>’, not applicable).
3104 <br><dt>-mode <mode><dd>The PGN Mode tag (default ‘<samp><span class="samp">EM</span></samp>’, Electronic Mail).
3105 <br><dt>Other options<dd>Any option flags not listed above are passed through to XBoard.
3106 Invoking XBoard through CMail changes the default values of two XBoard
3107 options: The default value for ‘<samp><span class="samp">-noChessProgram</span></samp>’ is changed to
3108 true; that is, by default no chess engine is started. The default
3109 value for ‘<samp><span class="samp">-timeDelay</span></samp>’ is changed to 0; that is, by default
3110 XBoard immediately goes to the end of the game as played so far,
3111 rather than stepping through the moves one by one. You can still set
3112 these options to whatever values you prefer by supplying them on
3113 CMail's command line. See <a href="#Options">Options</a>.
3117 <a name="CMail-game"></a>
3119 Next: <a rel="next" accesskey="n" href="#CMail-answer">CMail answer</a>,
3120 Previous: <a rel="previous" accesskey="p" href="#CMail-options">CMail options</a>,
3121 Up: <a rel="up" accesskey="u" href="#CMail">CMail</a>
3125 <h3 class="section">11.2 Starting a CMail Game</h3>
3127 <p>Type <samp><span class="file">cmail</span></samp> from a shell to start a game as white. After an opening
3128 message, you will be prompted for a game name, which is optional—if you
3129 simply press <Enter>, the game name will take the form
3130 ‘<samp><span class="samp">you-VS-opponent</span></samp>’. You will next be prompted for the short name
3131 of your opponent. If you haven't played this person before, you will also
3132 be prompted for his/her email address. <samp><span class="file">cmail</span></samp> will then invoke
3133 XBoard in the background. Make your first move and select
3134 ‘<samp><span class="samp">Mail Move</span></samp>’ from the ‘<samp><span class="samp">File</span></samp>’ menu. See <a href="#File-Menu">File Menu</a>. If all is well,
3135 <samp><span class="file">cmail</span></samp> will mail a copy of the move to your opponent. If you select
3136 ‘<samp><span class="samp">Exit</span></samp>’ without having selected ‘<samp><span class="samp">Mail Move</span></samp>’ then no move will be
3140 <a name="CMail-answer"></a>
3142 Next: <a rel="next" accesskey="n" href="#CMail-multi">CMail multi</a>,
3143 Previous: <a rel="previous" accesskey="p" href="#CMail-game">CMail game</a>,
3144 Up: <a rel="up" accesskey="u" href="#CMail">CMail</a>
3148 <h3 class="section">11.3 Answering a Move</h3>
3150 <p>When you receive a message from an opponent containing a move in one of
3151 your games, simply pipe the message through <samp><span class="file">cmail</span></samp>. In some mailers
3152 this is as simple as typing <kbd>| cmail</kbd> when viewing the message, while in
3153 others you may have to save the message to a file and do <kbd>cmail < file</kbd>
3154 at the command line. In either case <samp><span class="file">cmail</span></samp> will display the game using
3155 XBoard. If you didn't exit XBoard when you made your first move
3156 then <samp><span class="file">cmail</span></samp> will do its best to use the existing XBoard instead
3157 of starting a new one. As before, simply make a move and select
3158 ‘<samp><span class="samp">Mail Move</span></samp>’ from the ‘<samp><span class="samp">File</span></samp>’ menu. See <a href="#File-Menu">File Menu</a>. <samp><span class="file">cmail</span></samp>
3160 XBoard that was most recently used to display the current game. This
3161 means that many games can be in progress simultaneously, each with its own
3164 <p>If you want to look at the history or explore a variation, go ahead, but
3165 you must return to the current position before XBoard will allow you
3166 to mail a move. If you edit the game's history you must select
3167 ‘<samp><span class="samp">Reload Same Game</span></samp>’ from the ‘<samp><span class="samp">File</span></samp>’ menu to get back to the original
3168 position, then make the move you want and select ‘<samp><span class="samp">Mail Move</span></samp>’.
3169 As before, if you decide you aren't ready to make a move just yet you can
3170 either select ‘<samp><span class="samp">Exit</span></samp>’ without sending a move or just leave
3171 XBoard running until you are ready.
3174 <a name="CMail-multi"></a>
3176 Next: <a rel="next" accesskey="n" href="#CMail-completion">CMail completion</a>,
3177 Previous: <a rel="previous" accesskey="p" href="#CMail-answer">CMail answer</a>,
3178 Up: <a rel="up" accesskey="u" href="#CMail">CMail</a>
3182 <h3 class="section">11.4 Multi-Game Messages</h3>
3184 <p>It is possible to have a <samp><span class="file">cmail</span></samp> message carry more than one game.
3185 This feature was implemented to handle IECG (International Email Chess
3186 Group) matches, where a match consists of one game as white and one as black,
3187 with moves transmitted simultaneously. In case there are more general uses,
3188 <samp><span class="file">cmail</span></samp> itself places no limit on the number of black/white games
3189 contained in a message; however, XBoard does.
3192 <a name="CMail-completion"></a>
3194 Next: <a rel="next" accesskey="n" href="#CMail-trouble">CMail trouble</a>,
3195 Previous: <a rel="previous" accesskey="p" href="#CMail-multi">CMail multi</a>,
3196 Up: <a rel="up" accesskey="u" href="#CMail">CMail</a>
3200 <h3 class="section">11.5 Completing a Game</h3>
3202 <p>Because XBoard can detect checkmate and stalemate, <samp><span class="file">cmail</span></samp>
3203 handles game termination sensibly. As well as resignation, the
3204 ‘<samp><span class="samp">Action</span></samp>’ menu allows draws to be offered and accepted for
3205 <samp><span class="file">cmail</span></samp> games.
3207 <p>For multi-game messages, only unfinished and just-finished games will be
3208 included in email messages. When all the games are finished, they are
3209 archived in the user's archive directory, and similarly in the opponent's
3210 when he or she pipes the final message through <samp><span class="file">cmail</span></samp>. The archive
3211 file name includes the date the game was started.
3214 <a name="CMail-trouble"></a>
3216 Previous: <a rel="previous" accesskey="p" href="#CMail-completion">CMail completion</a>,
3217 Up: <a rel="up" accesskey="u" href="#CMail">CMail</a>
3221 <h3 class="section">11.6 Known CMail Problems</h3>
3223 <p>It's possible that a strange conjunction of conditions may occasionally
3224 mean that <samp><span class="file">cmail</span></samp> has trouble reactivating an existing
3225 XBoard. If this should happen, simply trying it again should work.
3226 If not, remove the file that stores the XBoard's PID
3227 (<samp><span class="file">game.pid</span></samp>) or use the ‘<samp><span class="samp">-xreuse</span></samp>’ option to force
3228 <samp><span class="file">cmail</span></samp> to start a new XBoard.
3230 <p>Versions of <samp><span class="file">cmail</span></samp> after 2.16 no longer understand the old file format
3231 that XBoard used to use and so cannot be used to correspond with
3232 anyone using an older version.
3234 <p>Versions of <samp><span class="file">cmail</span></samp> older than 2.11 do not handle multi-game messages,
3235 so multi-game correspondence is not possible with opponents using an older
3239 <a name="Other-programs"></a>
3241 Next: <a rel="next" accesskey="n" href="#Copyright">Copyright</a>,
3242 Previous: <a rel="previous" accesskey="p" href="#CMail">CMail</a>,
3243 Up: <a rel="up" accesskey="u" href="#Top">Top</a>
3247 <h2 class="chapter">12 Other programs you can use with XBoard</h2>
3249 <p><a name="index-Other-programs-578"></a>
3250 Here are some other programs you can use with XBoard
3253 <li><a accesskey="1" href="#GNU-Chess">GNU Chess</a>: The GNU Chess engine.
3254 <li><a accesskey="2" href="#Fairy_002dMax">Fairy-Max</a>: The Fairy-Max chess engine.
3255 <li><a accesskey="3" href="#HoiChess">HoiChess</a>: The HoiChess chess engine.
3256 <li><a accesskey="4" href="#Crafty">Crafty</a>: The Crafty chess engine.
3257 <li><a accesskey="5" href="#zic2xpm">zic2xpm</a>: The program used to import chess sets from ZIICS.
3261 <a name="GNU-Chess"></a>
3263 Next: <a rel="next" accesskey="n" href="#Fairy_002dMax">Fairy-Max</a>,
3264 Up: <a rel="up" accesskey="u" href="#Other-programs">Other programs</a>
3268 <h3 class="section">12.1 GNU Chess</h3>
3270 <p>The GNU Chess engine is available from:
3272 <p>ftp://ftp.gnu.org/gnu/gnuchess/
3274 <p>You can use XBoard to play a game against GNU Chess, or to
3275 interface GNU Chess to an ICS.
3278 <a name="Fairy-Max"></a>
3279 <a name="Fairy_002dMax"></a>
3281 Next: <a rel="next" accesskey="n" href="#HoiChess">HoiChess</a>,
3282 Previous: <a rel="previous" accesskey="p" href="#GNU-Chess">GNU Chess</a>,
3283 Up: <a rel="up" accesskey="u" href="#Other-programs">Other programs</a>
3287 <h3 class="section">12.2 Fairy-Max</h3>
3289 <p>Fairy-Max is a derivative from the once World's smallest Chess program micro-Max,
3290 which measures only about 100 lines of source code.
3291 The main difference with micro-Max is that Fairy-Max loads its move-generator
3292 tables from a file, so that the rules for piece movement can be easily configured
3293 to implement unorthodox pieces.
3294 Fairy-Max can therefore play a large number of variants, normal Chess being one of those.
3295 In addition it plays Knightmate, Capablanca and Gothic Chess, Shatranj, Courier Chess,
3296 Cylinder chess, Berolina Chess, while the user can easily define new variants.
3297 It can be obtained from:
3299 <p>http://home.hccnet.nl/h.g.muller/dwnldpage.html
3302 <a name="HoiChess"></a>
3304 Next: <a rel="next" accesskey="n" href="#Crafty">Crafty</a>,
3305 Previous: <a rel="previous" accesskey="p" href="#Fairy_002dMax">Fairy-Max</a>,
3306 Up: <a rel="up" accesskey="u" href="#Other-programs">Other programs</a>
3310 <h3 class="section">12.3 HoiChess</h3>
3312 <p>HoiChess is a not-so-very-strong Chess engine, which comes with a derivative HoiXiangqi,
3313 able to play Chinese Chess. It can be obtained from the standard Linux repositories
3316 <p>sudo apt-get install hoichess
3319 <a name="Crafty"></a>
3321 Next: <a rel="next" accesskey="n" href="#zic2xpm">zic2xpm</a>,
3322 Previous: <a rel="previous" accesskey="p" href="#HoiChess">HoiChess</a>,
3323 Up: <a rel="up" accesskey="u" href="#Other-programs">Other programs</a>
3327 <h3 class="section">12.4 Crafty</h3>
3329 <p>Crafty is a chess engine written by Bob Hyatt.
3330 You can use XBoard to play a game against Crafty, hook Crafty up
3331 to an ICS, or use Crafty to interactively analyze games and positions
3334 <p>Crafty is a strong, rapidly evolving chess program. This rapid
3335 pace of development is good, because it means Crafty is always
3336 getting better. This can sometimes cause problems with
3337 backwards compatibility, but usually the latest version of Crafty
3338 will work well with the latest version of XBoard.
3339 Crafty can be obtained from its author's FTP site:
3340 ftp://ftp.cis.uab.edu/hyatt/.
3342 <p>To use Crafty with XBoard, give the -fcp and -fd options as follows, where
3343 <crafty's directory> is the directory in which you installed Crafty
3344 and placed its book and other support files.
3347 <a name="zic2xpm"></a>
3349 Previous: <a rel="previous" accesskey="p" href="#Crafty">Crafty</a>,
3350 Up: <a rel="up" accesskey="u" href="#Other-programs">Other programs</a>
3354 <h3 class="section">12.5 zic2xpm</h3>
3356 <p>The “zic2xpm” program is used to import chess sets from the ZIICS(*)
3357 program into XBoard. “zic2xpm” is part of the XBoard distribution.
3358 ZIICS is available from:
3360 <p>ftp://ftp.freechess.org/pub/chess/DOS/ziics131.exe
3362 <p>To import ZIICS pieces, do this:
3364 <dt>1. Unzip ziics131.exe into a directory:<dd>
3365 <pre class="example"> unzip -L ziics131.exe -d ~/ziics
3367 <br><dt>2. Use zic2xpm to convert a set of pieces to XBoard format.<dd>
3368 For example, let's say you want to use the
3369 FRITZ4 set. These files are named “fritz4.*” in the ZIICS distribution.
3371 <pre class="example"> mkdir ~/fritz4
3373 zic2xpm ~/ziics/fritz4.*
3375 <br><dt>3. Give XBoard the “-pixmap” option when starting up, e.g.:<dd>
3376 <pre class="example"> xboard -pixmap ~/fritz4
3378 <p>Alternatively, you can add this line to your <samp><span class="file">.Xresources</span></samp> file:
3380 <pre class="example"> xboard*pixmapDirectory: ~/fritz4
3384 <p>(*) ZIICS is a separate copyrighted work of Andy McFarland.
3385 The “ZIICS pieces” are copyrighted works of their respective
3386 creators. Files produced by “zic2xpm” are for PERSONAL USE ONLY
3387 and may NOT be redistributed without explicit permission from
3388 the original creator(s) of the pieces.
3391 <a name="Copyright"></a>
3393 Next: <a rel="next" accesskey="n" href="#Copying">Copying</a>,
3394 Previous: <a rel="previous" accesskey="p" href="#Other-programs">Other programs</a>,
3395 Up: <a rel="up" accesskey="u" href="#Top">Top</a>
3399 <h2 class="unnumbered">Copyright</h2>
3401 <p>Copyright © 1991 Digital Equipment Corporation, Maynard, Massachusetts.
3403 <p>All Rights Reserved.
3405 <p>Permission to use, copy, modify, and distribute this software and its
3406 documentation for any purpose and without fee is hereby granted,
3407 provided that the above copyright notice appear in all copies and that
3408 both that copyright notice and this permission notice appear in
3409 supporting documentation, and that the name of Digital not be
3410 used in advertising or publicity pertaining to distribution of the
3411 software without specific, written prior permission.
3413 <p>Digital disclaims all warranties with regard to this software, including
3414 all implied warranties of merchantability and fitness. In no event shall
3415 Digital be liable for any special, indirect or consequential damages or
3416 any damages whatsoever resulting from loss of use, data or profits,
3417 whether in an action of contract, negligence or other tortious action,
3418 arising out of or in connection with the use or performance of this
3421 <p>Enhancements copyright © 1992-2003, 2004, 2005, 2006, 2007,
3422 2008, 2009, 2010, 2011, 2012 Free Software Foundation, Inc.
3424 <pre class="format">Published by the Free Software Foundation
3425 59 Temple Place - Suite 330
3426 Boston, MA 02111-1307 USA
3428 <p>Permission is granted to make and distribute verbatim copies of
3429 this manual provided the copyright notice and this permission notice
3430 are preserved on all copies.
3432 <p>Permission is granted to copy and distribute modified versions of this
3433 manual under the conditions for verbatim copying, provided also that the
3434 section entitled “GNU General Public License,”
3435 is included exactly as in the original, and provided that the entire
3436 resulting derived work is distributed under the terms of a permission
3437 notice identical to this one.
3439 <p>Permission is granted to copy and distribute translations of this manual
3440 into another language, under the above conditions for modified versions,
3441 except that the section entitled “GNU General Public License,”
3442 and this permission notice, may be included in translations approved by
3443 the Free Software Foundation instead of in the original English.
3446 <a name="Copying"></a>
3448 Next: <a rel="next" accesskey="n" href="#Index">Index</a>,
3449 Previous: <a rel="previous" accesskey="p" href="#Copyright">Copyright</a>,
3450 Up: <a rel="up" accesskey="u" href="#Top">Top</a>
3454 <h2 class="unnumbered">GNU GENERAL PUBLIC LICENSE</h2>
3456 <!-- The GNU General Public License. -->
3457 <div align="center">Version 3, 29 June 2007</div>
3459 <!-- This file is intended to be included within another document, -->
3460 <!-- hence no sectioning command or @node. -->
3461 <pre class="display"> Copyright © 2007 Free Software Foundation, Inc. <a href="http://fsf.org/">http://fsf.org/</a>
3463 Everyone is permitted to copy and distribute verbatim copies of this
3464 license document, but changing it is not allowed.
3466 <h3 class="heading">Preamble</h3>
3468 <p>The GNU General Public License is a free, copyleft license for
3469 software and other kinds of works.
3471 <p>The licenses for most software and other practical works are designed
3472 to take away your freedom to share and change the works. By contrast,
3473 the GNU General Public License is intended to guarantee your freedom
3474 to share and change all versions of a program—to make sure it remains
3475 free software for all its users. We, the Free Software Foundation,
3476 use the GNU General Public License for most of our software; it
3477 applies also to any other work released this way by its authors. You
3478 can apply it to your programs, too.
3480 <p>When we speak of free software, we are referring to freedom, not
3481 price. Our General Public Licenses are designed to make sure that you
3482 have the freedom to distribute copies of free software (and charge for
3483 them if you wish), that you receive source code or can get it if you
3484 want it, that you can change the software or use pieces of it in new
3485 free programs, and that you know you can do these things.
3487 <p>To protect your rights, we need to prevent others from denying you
3488 these rights or asking you to surrender the rights. Therefore, you
3489 have certain responsibilities if you distribute copies of the
3490 software, or if you modify it: responsibilities to respect the freedom
3493 <p>For example, if you distribute copies of such a program, whether
3494 gratis or for a fee, you must pass on to the recipients the same
3495 freedoms that you received. You must make sure that they, too,
3496 receive or can get the source code. And you must show them these
3497 terms so they know their rights.
3499 <p>Developers that use the GNU GPL protect your rights with two steps:
3500 (1) assert copyright on the software, and (2) offer you this License
3501 giving you legal permission to copy, distribute and/or modify it.
3503 <p>For the developers' and authors' protection, the GPL clearly explains
3504 that there is no warranty for this free software. For both users' and
3505 authors' sake, the GPL requires that modified versions be marked as
3506 changed, so that their problems will not be attributed erroneously to
3507 authors of previous versions.
3509 <p>Some devices are designed to deny users access to install or run
3510 modified versions of the software inside them, although the
3511 manufacturer can do so. This is fundamentally incompatible with the
3512 aim of protecting users' freedom to change the software. The
3513 systematic pattern of such abuse occurs in the area of products for
3514 individuals to use, which is precisely where it is most unacceptable.
3515 Therefore, we have designed this version of the GPL to prohibit the
3516 practice for those products. If such problems arise substantially in
3517 other domains, we stand ready to extend this provision to those
3518 domains in future versions of the GPL, as needed to protect the
3521 <p>Finally, every program is threatened constantly by software patents.
3522 States should not allow patents to restrict development and use of
3523 software on general-purpose computers, but in those that do, we wish
3524 to avoid the special danger that patents applied to a free program
3525 could make it effectively proprietary. To prevent this, the GPL
3526 assures that patents cannot be used to render the program non-free.
3528 <p>The precise terms and conditions for copying, distribution and
3529 modification follow.
3531 <h3 class="heading">TERMS AND CONDITIONS</h3>
3536 <p>“This License” refers to version 3 of the GNU General Public License.
3538 <p>“Copyright” also means copyright-like laws that apply to other kinds
3539 of works, such as semiconductor masks.
3541 <p>“The Program” refers to any copyrightable work licensed under this
3542 License. Each licensee is addressed as “you”. “Licensees” and
3543 “recipients” may be individuals or organizations.
3545 <p>To “modify” a work means to copy from or adapt all or part of the work
3546 in a fashion requiring copyright permission, other than the making of
3547 an exact copy. The resulting work is called a “modified version” of
3548 the earlier work or a work “based on” the earlier work.
3550 <p>A “covered work” means either the unmodified Program or a work based
3553 <p>To “propagate” a work means to do anything with it that, without
3554 permission, would make you directly or secondarily liable for
3555 infringement under applicable copyright law, except executing it on a
3556 computer or modifying a private copy. Propagation includes copying,
3557 distribution (with or without modification), making available to the
3558 public, and in some countries other activities as well.
3560 <p>To “convey” a work means any kind of propagation that enables other
3561 parties to make or receive copies. Mere interaction with a user
3562 through a computer network, with no transfer of a copy, is not
3565 <p>An interactive user interface displays “Appropriate Legal Notices” to
3566 the extent that it includes a convenient and prominently visible
3567 feature that (1) displays an appropriate copyright notice, and (2)
3568 tells the user that there is no warranty for the work (except to the
3569 extent that warranties are provided), that licensees may convey the
3570 work under this License, and how to view a copy of this License. If
3571 the interface presents a list of user commands or options, such as a
3572 menu, a prominent item in the list meets this criterion.
3576 <p>The “source code” for a work means the preferred form of the work for
3577 making modifications to it. “Object code” means any non-source form
3580 <p>A “Standard Interface” means an interface that either is an official
3581 standard defined by a recognized standards body, or, in the case of
3582 interfaces specified for a particular programming language, one that
3583 is widely used among developers working in that language.
3585 <p>The “System Libraries” of an executable work include anything, other
3586 than the work as a whole, that (a) is included in the normal form of
3587 packaging a Major Component, but which is not part of that Major
3588 Component, and (b) serves only to enable use of the work with that
3589 Major Component, or to implement a Standard Interface for which an
3590 implementation is available to the public in source code form. A
3591 “Major Component”, in this context, means a major essential component
3592 (kernel, window system, and so on) of the specific operating system
3593 (if any) on which the executable work runs, or a compiler used to
3594 produce the work, or an object code interpreter used to run it.
3596 <p>The “Corresponding Source” for a work in object code form means all
3597 the source code needed to generate, install, and (for an executable
3598 work) run the object code and to modify the work, including scripts to
3599 control those activities. However, it does not include the work's
3600 System Libraries, or general-purpose tools or generally available free
3601 programs which are used unmodified in performing those activities but
3602 which are not part of the work. For example, Corresponding Source
3603 includes interface definition files associated with source files for
3604 the work, and the source code for shared libraries and dynamically
3605 linked subprograms that the work is specifically designed to require,
3606 such as by intimate data communication or control flow between those
3607 subprograms and other parts of the work.
3609 <p>The Corresponding Source need not include anything that users can
3610 regenerate automatically from other parts of the Corresponding Source.
3612 <p>The Corresponding Source for a work in source code form is that same
3615 <li>Basic Permissions.
3617 <p>All rights granted under this License are granted for the term of
3618 copyright on the Program, and are irrevocable provided the stated
3619 conditions are met. This License explicitly affirms your unlimited
3620 permission to run the unmodified Program. The output from running a
3621 covered work is covered by this License only if the output, given its
3622 content, constitutes a covered work. This License acknowledges your
3623 rights of fair use or other equivalent, as provided by copyright law.
3625 <p>You may make, run and propagate covered works that you do not convey,
3626 without conditions so long as your license otherwise remains in force.
3627 You may convey covered works to others for the sole purpose of having
3628 them make modifications exclusively for you, or provide you with
3629 facilities for running those works, provided that you comply with the
3630 terms of this License in conveying all material for which you do not
3631 control copyright. Those thus making or running the covered works for
3632 you must do so exclusively on your behalf, under your direction and
3633 control, on terms that prohibit them from making any copies of your
3634 copyrighted material outside their relationship with you.
3636 <p>Conveying under any other circumstances is permitted solely under the
3637 conditions stated below. Sublicensing is not allowed; section 10
3638 makes it unnecessary.
3640 <li>Protecting Users' Legal Rights From Anti-Circumvention Law.
3642 <p>No covered work shall be deemed part of an effective technological
3643 measure under any applicable law fulfilling obligations under article
3644 11 of the WIPO copyright treaty adopted on 20 December 1996, or
3645 similar laws prohibiting or restricting circumvention of such
3648 <p>When you convey a covered work, you waive any legal power to forbid
3649 circumvention of technological measures to the extent such
3650 circumvention is effected by exercising rights under this License with
3651 respect to the covered work, and you disclaim any intention to limit
3652 operation or modification of the work as a means of enforcing, against
3653 the work's users, your or third parties' legal rights to forbid
3654 circumvention of technological measures.
3656 <li>Conveying Verbatim Copies.
3658 <p>You may convey verbatim copies of the Program's source code as you
3659 receive it, in any medium, provided that you conspicuously and
3660 appropriately publish on each copy an appropriate copyright notice;
3661 keep intact all notices stating that this License and any
3662 non-permissive terms added in accord with section 7 apply to the code;
3663 keep intact all notices of the absence of any warranty; and give all
3664 recipients a copy of this License along with the Program.
3666 <p>You may charge any price or no price for each copy that you convey,
3667 and you may offer support or warranty protection for a fee.
3669 <li>Conveying Modified Source Versions.
3671 <p>You may convey a work based on the Program, or the modifications to
3672 produce it from the Program, in the form of source code under the
3673 terms of section 4, provided that you also meet all of these
3677 <li>The work must carry prominent notices stating that you modified it,
3678 and giving a relevant date.
3680 <li>The work must carry prominent notices stating that it is released
3681 under this License and any conditions added under section 7. This
3682 requirement modifies the requirement in section 4 to “keep intact all
3685 <li>You must license the entire work, as a whole, under this License to
3686 anyone who comes into possession of a copy. This License will
3687 therefore apply, along with any applicable section 7 additional terms,
3688 to the whole of the work, and all its parts, regardless of how they
3689 are packaged. This License gives no permission to license the work in
3690 any other way, but it does not invalidate such permission if you have
3691 separately received it.
3693 <li>If the work has interactive user interfaces, each must display
3694 Appropriate Legal Notices; however, if the Program has interactive
3695 interfaces that do not display Appropriate Legal Notices, your work
3696 need not make them do so.
3699 <p>A compilation of a covered work with other separate and independent
3700 works, which are not by their nature extensions of the covered work,
3701 and which are not combined with it such as to form a larger program,
3702 in or on a volume of a storage or distribution medium, is called an
3703 “aggregate” if the compilation and its resulting copyright are not
3704 used to limit the access or legal rights of the compilation's users
3705 beyond what the individual works permit. Inclusion of a covered work
3706 in an aggregate does not cause this License to apply to the other
3707 parts of the aggregate.
3709 <li>Conveying Non-Source Forms.
3711 <p>You may convey a covered work in object code form under the terms of
3712 sections 4 and 5, provided that you also convey the machine-readable
3713 Corresponding Source under the terms of this License, in one of these
3717 <li>Convey the object code in, or embodied in, a physical product
3718 (including a physical distribution medium), accompanied by the
3719 Corresponding Source fixed on a durable physical medium customarily
3720 used for software interchange.
3722 <li>Convey the object code in, or embodied in, a physical product
3723 (including a physical distribution medium), accompanied by a written
3724 offer, valid for at least three years and valid for as long as you
3725 offer spare parts or customer support for that product model, to give
3726 anyone who possesses the object code either (1) a copy of the
3727 Corresponding Source for all the software in the product that is
3728 covered by this License, on a durable physical medium customarily used
3729 for software interchange, for a price no more than your reasonable
3730 cost of physically performing this conveying of source, or (2) access
3731 to copy the Corresponding Source from a network server at no charge.
3733 <li>Convey individual copies of the object code with a copy of the written
3734 offer to provide the Corresponding Source. This alternative is
3735 allowed only occasionally and noncommercially, and only if you
3736 received the object code with such an offer, in accord with subsection
3739 <li>Convey the object code by offering access from a designated place
3740 (gratis or for a charge), and offer equivalent access to the
3741 Corresponding Source in the same way through the same place at no
3742 further charge. You need not require recipients to copy the
3743 Corresponding Source along with the object code. If the place to copy
3744 the object code is a network server, the Corresponding Source may be
3745 on a different server (operated by you or a third party) that supports
3746 equivalent copying facilities, provided you maintain clear directions
3747 next to the object code saying where to find the Corresponding Source.
3748 Regardless of what server hosts the Corresponding Source, you remain
3749 obligated to ensure that it is available for as long as needed to
3750 satisfy these requirements.
3752 <li>Convey the object code using peer-to-peer transmission, provided you
3753 inform other peers where the object code and Corresponding Source of
3754 the work are being offered to the general public at no charge under
3759 <p>A separable portion of the object code, whose source code is excluded
3760 from the Corresponding Source as a System Library, need not be
3761 included in conveying the object code work.
3763 <p>A “User Product” is either (1) a “consumer product”, which means any
3764 tangible personal property which is normally used for personal,
3765 family, or household purposes, or (2) anything designed or sold for
3766 incorporation into a dwelling. In determining whether a product is a
3767 consumer product, doubtful cases shall be resolved in favor of
3768 coverage. For a particular product received by a particular user,
3769 “normally used” refers to a typical or common use of that class of
3770 product, regardless of the status of the particular user or of the way
3771 in which the particular user actually uses, or expects or is expected
3772 to use, the product. A product is a consumer product regardless of
3773 whether the product has substantial commercial, industrial or
3774 non-consumer uses, unless such uses represent the only significant
3775 mode of use of the product.
3777 <p>“Installation Information” for a User Product means any methods,
3778 procedures, authorization keys, or other information required to
3779 install and execute modified versions of a covered work in that User
3780 Product from a modified version of its Corresponding Source. The
3781 information must suffice to ensure that the continued functioning of
3782 the modified object code is in no case prevented or interfered with
3783 solely because modification has been made.
3785 <p>If you convey an object code work under this section in, or with, or
3786 specifically for use in, a User Product, and the conveying occurs as
3787 part of a transaction in which the right of possession and use of the
3788 User Product is transferred to the recipient in perpetuity or for a
3789 fixed term (regardless of how the transaction is characterized), the
3790 Corresponding Source conveyed under this section must be accompanied
3791 by the Installation Information. But this requirement does not apply
3792 if neither you nor any third party retains the ability to install
3793 modified object code on the User Product (for example, the work has
3794 been installed in ROM).
3796 <p>The requirement to provide Installation Information does not include a
3797 requirement to continue to provide support service, warranty, or
3798 updates for a work that has been modified or installed by the
3799 recipient, or for the User Product in which it has been modified or
3800 installed. Access to a network may be denied when the modification
3801 itself materially and adversely affects the operation of the network
3802 or violates the rules and protocols for communication across the
3805 <p>Corresponding Source conveyed, and Installation Information provided,
3806 in accord with this section must be in a format that is publicly
3807 documented (and with an implementation available to the public in
3808 source code form), and must require no special password or key for
3809 unpacking, reading or copying.
3811 <li>Additional Terms.
3813 <p>“Additional permissions” are terms that supplement the terms of this
3814 License by making exceptions from one or more of its conditions.
3815 Additional permissions that are applicable to the entire Program shall
3816 be treated as though they were included in this License, to the extent
3817 that they are valid under applicable law. If additional permissions
3818 apply only to part of the Program, that part may be used separately
3819 under those permissions, but the entire Program remains governed by
3820 this License without regard to the additional permissions.
3822 <p>When you convey a copy of a covered work, you may at your option
3823 remove any additional permissions from that copy, or from any part of
3824 it. (Additional permissions may be written to require their own
3825 removal in certain cases when you modify the work.) You may place
3826 additional permissions on material, added by you to a covered work,
3827 for which you have or can give appropriate copyright permission.
3829 <p>Notwithstanding any other provision of this License, for material you
3830 add to a covered work, you may (if authorized by the copyright holders
3831 of that material) supplement the terms of this License with terms:
3834 <li>Disclaiming warranty or limiting liability differently from the terms
3835 of sections 15 and 16 of this License; or
3837 <li>Requiring preservation of specified reasonable legal notices or author
3838 attributions in that material or in the Appropriate Legal Notices
3839 displayed by works containing it; or
3841 <li>Prohibiting misrepresentation of the origin of that material, or
3842 requiring that modified versions of such material be marked in
3843 reasonable ways as different from the original version; or
3845 <li>Limiting the use for publicity purposes of names of licensors or
3846 authors of the material; or
3848 <li>Declining to grant rights under trademark law for use of some trade
3849 names, trademarks, or service marks; or
3851 <li>Requiring indemnification of licensors and authors of that material by
3852 anyone who conveys the material (or modified versions of it) with
3853 contractual assumptions of liability to the recipient, for any
3854 liability that these contractual assumptions directly impose on those
3855 licensors and authors.
3858 <p>All other non-permissive additional terms are considered “further
3859 restrictions” within the meaning of section 10. If the Program as you
3860 received it, or any part of it, contains a notice stating that it is
3861 governed by this License along with a term that is a further
3862 restriction, you may remove that term. If a license document contains
3863 a further restriction but permits relicensing or conveying under this
3864 License, you may add to a covered work material governed by the terms
3865 of that license document, provided that the further restriction does
3866 not survive such relicensing or conveying.
3868 <p>If you add terms to a covered work in accord with this section, you
3869 must place, in the relevant source files, a statement of the
3870 additional terms that apply to those files, or a notice indicating
3871 where to find the applicable terms.
3873 <p>Additional terms, permissive or non-permissive, may be stated in the
3874 form of a separately written license, or stated as exceptions; the
3875 above requirements apply either way.
3879 <p>You may not propagate or modify a covered work except as expressly
3880 provided under this License. Any attempt otherwise to propagate or
3881 modify it is void, and will automatically terminate your rights under
3882 this License (including any patent licenses granted under the third
3883 paragraph of section 11).
3885 <p>However, if you cease all violation of this License, then your license
3886 from a particular copyright holder is reinstated (a) provisionally,
3887 unless and until the copyright holder explicitly and finally
3888 terminates your license, and (b) permanently, if the copyright holder
3889 fails to notify you of the violation by some reasonable means prior to
3890 60 days after the cessation.
3892 <p>Moreover, your license from a particular copyright holder is
3893 reinstated permanently if the copyright holder notifies you of the
3894 violation by some reasonable means, this is the first time you have
3895 received notice of violation of this License (for any work) from that
3896 copyright holder, and you cure the violation prior to 30 days after
3897 your receipt of the notice.
3899 <p>Termination of your rights under this section does not terminate the
3900 licenses of parties who have received copies or rights from you under
3901 this License. If your rights have been terminated and not permanently
3902 reinstated, you do not qualify to receive new licenses for the same
3903 material under section 10.
3905 <li>Acceptance Not Required for Having Copies.
3907 <p>You are not required to accept this License in order to receive or run
3908 a copy of the Program. Ancillary propagation of a covered work
3909 occurring solely as a consequence of using peer-to-peer transmission
3910 to receive a copy likewise does not require acceptance. However,
3911 nothing other than this License grants you permission to propagate or
3912 modify any covered work. These actions infringe copyright if you do
3913 not accept this License. Therefore, by modifying or propagating a
3914 covered work, you indicate your acceptance of this License to do so.
3916 <li>Automatic Licensing of Downstream Recipients.
3918 <p>Each time you convey a covered work, the recipient automatically
3919 receives a license from the original licensors, to run, modify and
3920 propagate that work, subject to this License. You are not responsible
3921 for enforcing compliance by third parties with this License.
3923 <p>An “entity transaction” is a transaction transferring control of an
3924 organization, or substantially all assets of one, or subdividing an
3925 organization, or merging organizations. If propagation of a covered
3926 work results from an entity transaction, each party to that
3927 transaction who receives a copy of the work also receives whatever
3928 licenses to the work the party's predecessor in interest had or could
3929 give under the previous paragraph, plus a right to possession of the
3930 Corresponding Source of the work from the predecessor in interest, if
3931 the predecessor has it or can get it with reasonable efforts.
3933 <p>You may not impose any further restrictions on the exercise of the
3934 rights granted or affirmed under this License. For example, you may
3935 not impose a license fee, royalty, or other charge for exercise of
3936 rights granted under this License, and you may not initiate litigation
3937 (including a cross-claim or counterclaim in a lawsuit) alleging that
3938 any patent claim is infringed by making, using, selling, offering for
3939 sale, or importing the Program or any portion of it.
3943 <p>A “contributor” is a copyright holder who authorizes use under this
3944 License of the Program or a work on which the Program is based. The
3945 work thus licensed is called the contributor's “contributor version”.
3947 <p>A contributor's “essential patent claims” are all patent claims owned
3948 or controlled by the contributor, whether already acquired or
3949 hereafter acquired, that would be infringed by some manner, permitted
3950 by this License, of making, using, or selling its contributor version,
3951 but do not include claims that would be infringed only as a
3952 consequence of further modification of the contributor version. For
3953 purposes of this definition, “control” includes the right to grant
3954 patent sublicenses in a manner consistent with the requirements of
3957 <p>Each contributor grants you a non-exclusive, worldwide, royalty-free
3958 patent license under the contributor's essential patent claims, to
3959 make, use, sell, offer for sale, import and otherwise run, modify and
3960 propagate the contents of its contributor version.
3962 <p>In the following three paragraphs, a “patent license” is any express
3963 agreement or commitment, however denominated, not to enforce a patent
3964 (such as an express permission to practice a patent or covenant not to
3965 sue for patent infringement). To “grant” such a patent license to a
3966 party means to make such an agreement or commitment not to enforce a
3967 patent against the party.
3969 <p>If you convey a covered work, knowingly relying on a patent license,
3970 and the Corresponding Source of the work is not available for anyone
3971 to copy, free of charge and under the terms of this License, through a
3972 publicly available network server or other readily accessible means,
3973 then you must either (1) cause the Corresponding Source to be so
3974 available, or (2) arrange to deprive yourself of the benefit of the
3975 patent license for this particular work, or (3) arrange, in a manner
3976 consistent with the requirements of this License, to extend the patent
3977 license to downstream recipients. “Knowingly relying” means you have
3978 actual knowledge that, but for the patent license, your conveying the
3979 covered work in a country, or your recipient's use of the covered work
3980 in a country, would infringe one or more identifiable patents in that
3981 country that you have reason to believe are valid.
3983 <p>If, pursuant to or in connection with a single transaction or
3984 arrangement, you convey, or propagate by procuring conveyance of, a
3985 covered work, and grant a patent license to some of the parties
3986 receiving the covered work authorizing them to use, propagate, modify
3987 or convey a specific copy of the covered work, then the patent license
3988 you grant is automatically extended to all recipients of the covered
3989 work and works based on it.
3991 <p>A patent license is “discriminatory” if it does not include within the
3992 scope of its coverage, prohibits the exercise of, or is conditioned on
3993 the non-exercise of one or more of the rights that are specifically
3994 granted under this License. You may not convey a covered work if you
3995 are a party to an arrangement with a third party that is in the
3996 business of distributing software, under which you make payment to the
3997 third party based on the extent of your activity of conveying the
3998 work, and under which the third party grants, to any of the parties
3999 who would receive the covered work from you, a discriminatory patent
4000 license (a) in connection with copies of the covered work conveyed by
4001 you (or copies made from those copies), or (b) primarily for and in
4002 connection with specific products or compilations that contain the
4003 covered work, unless you entered into that arrangement, or that patent
4004 license was granted, prior to 28 March 2007.
4006 <p>Nothing in this License shall be construed as excluding or limiting
4007 any implied license or other defenses to infringement that may
4008 otherwise be available to you under applicable patent law.
4010 <li>No Surrender of Others' Freedom.
4012 <p>If conditions are imposed on you (whether by court order, agreement or
4013 otherwise) that contradict the conditions of this License, they do not
4014 excuse you from the conditions of this License. If you cannot convey
4015 a covered work so as to satisfy simultaneously your obligations under
4016 this License and any other pertinent obligations, then as a
4017 consequence you may not convey it at all. For example, if you agree
4018 to terms that obligate you to collect a royalty for further conveying
4019 from those to whom you convey the Program, the only way you could
4020 satisfy both those terms and this License would be to refrain entirely
4021 from conveying the Program.
4023 <li>Use with the GNU Affero General Public License.
4025 <p>Notwithstanding any other provision of this License, you have
4026 permission to link or combine any covered work with a work licensed
4027 under version 3 of the GNU Affero General Public License into a single
4028 combined work, and to convey the resulting work. The terms of this
4029 License will continue to apply to the part which is the covered work,
4030 but the special requirements of the GNU Affero General Public License,
4031 section 13, concerning interaction through a network will apply to the
4032 combination as such.
4034 <li>Revised Versions of this License.
4036 <p>The Free Software Foundation may publish revised and/or new versions
4037 of the GNU General Public License from time to time. Such new
4038 versions will be similar in spirit to the present version, but may
4039 differ in detail to address new problems or concerns.
4041 <p>Each version is given a distinguishing version number. If the Program
4042 specifies that a certain numbered version of the GNU General Public
4043 License “or any later version” applies to it, you have the option of
4044 following the terms and conditions either of that numbered version or
4045 of any later version published by the Free Software Foundation. If
4046 the Program does not specify a version number of the GNU General
4047 Public License, you may choose any version ever published by the Free
4048 Software Foundation.
4050 <p>If the Program specifies that a proxy can decide which future versions
4051 of the GNU General Public License can be used, that proxy's public
4052 statement of acceptance of a version permanently authorizes you to
4053 choose that version for the Program.
4055 <p>Later license versions may give you additional or different
4056 permissions. However, no additional obligations are imposed on any
4057 author or copyright holder as a result of your choosing to follow a
4060 <li>Disclaimer of Warranty.
4062 <p>THERE IS NO WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY
4063 APPLICABLE LAW. EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT
4064 HOLDERS AND/OR OTHER PARTIES PROVIDE THE PROGRAM “AS IS” WITHOUT
4065 WARRANTY OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT
4066 LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
4067 A PARTICULAR PURPOSE. THE ENTIRE RISK AS TO THE QUALITY AND
4068 PERFORMANCE OF THE PROGRAM IS WITH YOU. SHOULD THE PROGRAM PROVE
4069 DEFECTIVE, YOU ASSUME THE COST OF ALL NECESSARY SERVICING, REPAIR OR
4072 <li>Limitation of Liability.
4074 <p>IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
4075 WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES AND/OR
4076 CONVEYS THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES,
4077 INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES
4078 ARISING OUT OF THE USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT
4079 NOT LIMITED TO LOSS OF DATA OR DATA BEING RENDERED INACCURATE OR
4080 LOSSES SUSTAINED BY YOU OR THIRD PARTIES OR A FAILURE OF THE PROGRAM
4081 TO OPERATE WITH ANY OTHER PROGRAMS), EVEN IF SUCH HOLDER OR OTHER
4082 PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.
4084 <li>Interpretation of Sections 15 and 16.
4086 <p>If the disclaimer of warranty and limitation of liability provided
4087 above cannot be given local legal effect according to their terms,
4088 reviewing courts shall apply local law that most closely approximates
4089 an absolute waiver of all civil liability in connection with the
4090 Program, unless a warranty or assumption of liability accompanies a
4091 copy of the Program in return for a fee.
4095 <h3 class="heading">END OF TERMS AND CONDITIONS</h3>
4097 <h3 class="heading">How to Apply These Terms to Your New Programs</h3>
4099 <p>If you develop a new program, and you want it to be of the greatest
4100 possible use to the public, the best way to achieve this is to make it
4101 free software which everyone can redistribute and change under these
4104 <p>To do so, attach the following notices to the program. It is safest
4105 to attach them to the start of each source file to most effectively
4106 state the exclusion of warranty; and each file should have at least
4107 the “copyright” line and a pointer to where the full notice is found.
4109 <pre class="smallexample"> <var>one line to give the program's name and a brief idea of what it does.</var>
4110 Copyright (C) <var>year</var> <var>name of author</var>
4112 This program is free software: you can redistribute it and/or modify
4113 it under the terms of the GNU General Public License as published by
4114 the Free Software Foundation, either version 3 of the License, or (at
4115 your option) any later version.
4117 This program is distributed in the hope that it will be useful, but
4118 WITHOUT ANY WARRANTY; without even the implied warranty of
4119 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
4120 General Public License for more details.
4122 You should have received a copy of the GNU General Public License
4123 along with this program. If not, see <a href="http://www.gnu.org/licenses/">http://www.gnu.org/licenses/</a>.
4125 <p>Also add information on how to contact you by electronic and paper mail.
4127 <p>If the program does terminal interaction, make it output a short
4128 notice like this when it starts in an interactive mode:
4130 <pre class="smallexample"> <var>program</var> Copyright (C) <var>year</var> <var>name of author</var>
4131 This program comes with ABSOLUTELY NO WARRANTY; for details type ‘<samp><span class="samp">show w</span></samp>’.
4132 This is free software, and you are welcome to redistribute it
4133 under certain conditions; type ‘<samp><span class="samp">show c</span></samp>’ for details.
4135 <p>The hypothetical commands ‘<samp><span class="samp">show w</span></samp>’ and ‘<samp><span class="samp">show c</span></samp>’ should show
4136 the appropriate parts of the General Public License. Of course, your
4137 program's commands might be different; for a GUI interface, you would
4138 use an “about box”.
4140 <p>You should also get your employer (if you work as a programmer) or school,
4141 if any, to sign a “copyright disclaimer” for the program, if necessary.
4142 For more information on this, and how to apply and follow the GNU GPL, see
4143 <a href="http://www.gnu.org/licenses/">http://www.gnu.org/licenses/</a>.
4145 <p>The GNU General Public License does not permit incorporating your
4146 program into proprietary programs. If your program is a subroutine
4147 library, you may consider it more useful to permit linking proprietary
4148 applications with the library. If this is what you want to do, use
4149 the GNU Lesser General Public License instead of this License. But
4150 first, please read <a href="http://www.gnu.org/philosophy/why-not-lgpl.html">http://www.gnu.org/philosophy/why-not-lgpl.html</a>.
4154 <a name="Index"></a>
4156 Previous: <a rel="previous" accesskey="p" href="#Copying">Copying</a>,
4157 Up: <a rel="up" accesskey="u" href="#Top">Top</a>
4161 <h2 class="unnumbered">Index</h2>
4163 <ul class="index-cp" compact>
4164 <li><a href="#index-g_t_002danimateSpeed_002c-option-502">-animateSpeed, option</a>: <a href="#User-interface-options">User interface options</a></li>
4165 <li><a href="#index-g_t_002dautoDisplayComment_002c-option-503">-autoDisplayComment, option</a>: <a href="#User-interface-options">User interface options</a></li>
4166 <li><a href="#index-g_t_002dautoDisplayTags_002c-option-504">-autoDisplayTags, option</a>: <a href="#User-interface-options">User interface options</a></li>
4167 <li><a href="#index-g_t_002dpasteSelection_002c-option-505">-pasteSelection, option</a>: <a href="#User-interface-options">User interface options</a></li>
4168 <li><a href="#index-g_t_002eicsrc-320">.icsrc</a>: <a href="#ICS-options">ICS options</a></li>
4169 <li><a href="#index-g_t_003c_002c-Button-35"><, Button</a>: <a href="#Edit-Menu">Edit Menu</a></li>
4170 <li><a href="#index-g_t_003c_003c_002c-Button-39"><<, Button</a>: <a href="#Edit-Menu">Edit Menu</a></li>
4171 <li><a href="#index-g_t_003e_002c-Button-37">>, Button</a>: <a href="#Edit-Menu">Edit Menu</a></li>
4172 <li><a href="#index-g_t_003e_003e_002c-Button-41">>>, Button</a>: <a href="#Edit-Menu">Edit Menu</a></li>
4173 <li><a href="#index-abort_002c-ICS-command-559">abort, ICS command</a>: <a href="#Chess-Servers">Chess Servers</a></li>
4174 <li><a href="#index-Abort_002c-Menu-Item-73">Abort, Menu Item</a>: <a href="#Action-Menu">Action Menu</a></li>
4175 <li><a href="#index-About-XBoard_002c-Menu-Item-180">About XBoard, Menu Item</a>: <a href="#Help-Menu">Help Menu</a></li>
4176 <li><a href="#index-Absolute-Analysis-Scores_002c-Menu-Item-95">Absolute Analysis Scores, Menu Item</a>: <a href="#Options-Menu">Options Menu</a></li>
4177 <li><a href="#index-absoluteAnalysisScores_002c-option-510">absoluteAnalysisScores, option</a>: <a href="#User-interface-options">User interface options</a></li>
4178 <li><a href="#index-accept_002c-ICS-command-555">accept, ICS command</a>: <a href="#Chess-Servers">Chess Servers</a></li>
4179 <li><a href="#index-Accept_002c-Menu-Item-68">Accept, Menu Item</a>: <a href="#Action-Menu">Action Menu</a></li>
4180 <li><a href="#index-Action_002c-Menu-67">Action, Menu</a>: <a href="#Action-Menu">Action Menu</a></li>
4181 <li><a href="#index-adapterCommand_002c-option-261">adapterCommand, option</a>: <a href="#UCI-_002b-WB-Engine-Settings">UCI + WB Engine Settings</a></li>
4182 <li><a href="#index-adjourn_002c-ICS-command-558">adjourn, ICS command</a>: <a href="#Chess-Servers">Chess Servers</a></li>
4183 <li><a href="#index-Adjourn_002c-Menu-Item-72">Adjourn, Menu Item</a>: <a href="#Action-Menu">Action Menu</a></li>
4184 <li><a href="#index-Adjudicate-Draw_002c-Menu-Item-80">Adjudicate Draw, Menu Item</a>: <a href="#Action-Menu">Action Menu</a></li>
4185 <li><a href="#index-Adjudicate-to-Black_002c-Menu-Item-79">Adjudicate to Black, Menu Item</a>: <a href="#Action-Menu">Action Menu</a></li>
4186 <li><a href="#index-Adjudicate-to-White_002c-Menu-Item-78">Adjudicate to White, Menu Item</a>: <a href="#Action-Menu">Action Menu</a></li>
4187 <li><a href="#index-adjudicateDrawMoves_002c-option-514">adjudicateDrawMoves, option</a>: <a href="#Adjudication-Options">Adjudication Options</a></li>
4188 <li><a href="#index-adjudicateLossThreshold_002c-option-513">adjudicateLossThreshold, option</a>: <a href="#Adjudication-Options">Adjudication Options</a></li>
4189 <li><a href="#index-Adjudications_002c-Menu-Item-122">Adjudications, Menu Item</a>: <a href="#Options-Menu">Options Menu</a></li>
4190 <li><a href="#index-afterGame_002c-option-297">afterGame, option</a>: <a href="#Tournament-options">Tournament options</a></li>
4191 <li><a href="#index-afterTourney_002c-option-298">afterTourney, option</a>: <a href="#Tournament-options">Tournament options</a></li>
4192 <li><a href="#index-alarm_002c-option-339">alarm, option</a>: <a href="#ICS-options">ICS options</a></li>
4193 <li><a href="#index-Almost-Always-Queen_002c-Menu-Item-96">Almost Always Queen, Menu Item</a>: <a href="#Options-Menu">Options Menu</a></li>
4194 <li><a href="#index-Also-match-left_002dright-flipped-position_002c-Menu-Item-170">Also match left-right flipped position, Menu Item</a>: <a href="#Options-Menu">Options Menu</a></li>
4195 <li><a href="#index-Also-match-reversed-colors_002c-Menu-Item-169">Also match reversed colors, Menu Item</a>: <a href="#Options-Menu">Options Menu</a></li>
4196 <li><a href="#index-alwaysPromoteToQueen_002c-option-436">alwaysPromoteToQueen, option</a>: <a href="#User-interface-options">User interface options</a></li>
4197 <li><a href="#index-Analysis-Mode_002c-Menu-Item-59">Analysis Mode, Menu Item</a>: <a href="#Mode-Menu">Mode Menu</a></li>
4198 <li><a href="#index-Analyze-Game_002c-Menu-Item-61">Analyze Game, Menu Item</a>: <a href="#Mode-Menu">Mode Menu</a></li>
4199 <li><a href="#index-Animate-Dragging_002c-Menu-Item-97">Animate Dragging, Menu Item</a>: <a href="#Options-Menu">Options Menu</a></li>
4200 <li><a href="#index-Animate-Moving_002c-Menu-Item-98">Animate Moving, Menu Item</a>: <a href="#Options-Menu">Options Menu</a></li>
4201 <li><a href="#index-animate_002c-option-500">animate, option</a>: <a href="#User-interface-options">User interface options</a></li>
4202 <li><a href="#index-animateDragging_002c-option-499">animateDragging, option</a>: <a href="#User-interface-options">User interface options</a></li>
4203 <li><a href="#index-animateMoving_002c-option-501">animateMoving, option</a>: <a href="#User-interface-options">User interface options</a></li>
4204 <li><a href="#index-Animation-Speed_002c-Menu-Item-118">Animation Speed, Menu Item</a>: <a href="#Options-Menu">Options Menu</a></li>
4205 <li><a href="#index-Annotate_002c-Menu-Item-32">Annotate, Menu Item</a>: <a href="#Edit-Menu">Edit Menu</a></li>
4206 <li><a href="#index-at-sign_002c-option-416">at sign, option</a>: <a href="#Load-and-Save-options">Load and Save options</a></li>
4207 <li><a href="#index-Authors-575">Authors</a>: <a href="#Contributors">Contributors</a></li>
4208 <li><a href="#index-Auto-Comment_002c-Menu-Item-125">Auto Comment, Menu Item</a>: <a href="#Options-Menu">Options Menu</a></li>
4209 <li><a href="#index-Auto-Flag_002c-Menu-Item-99">Auto Flag, Menu Item</a>: <a href="#Options-Menu">Options Menu</a></li>
4210 <li><a href="#index-Auto-Flip-View_002c-Menu-Item-100">Auto Flip View, Menu Item</a>: <a href="#Options-Menu">Options Menu</a></li>
4211 <li><a href="#index-Auto-Kibitz_002c-Menu-Item-124">Auto Kibitz, Menu Item</a>: <a href="#Options-Menu">Options Menu</a></li>
4212 <li><a href="#index-Auto-Observe_002c-Menu-Item-126">Auto Observe, Menu Item</a>: <a href="#Options-Menu">Options Menu</a></li>
4213 <li><a href="#index-Auto-Raise-Board_002c-Menu-Item-127">Auto Raise Board, Menu Item</a>: <a href="#Options-Menu">Options Menu</a></li>
4214 <li><a href="#index-Auto-Save_002c-Menu-Item-128">Auto Save, Menu Item</a>: <a href="#Options-Menu">Options Menu</a></li>
4215 <li><a href="#index-Auto_002dRefresh-Seek-Graph_002c-Menu-Item-134">Auto-Refresh Seek Graph, Menu Item</a>: <a href="#Options-Menu">Options Menu</a></li>
4216 <li><a href="#index-autobs_002c-option-328">autobs, option</a>: <a href="#ICS-options">ICS options</a></li>
4217 <li><a href="#index-autoCallFlag_002c-option-327">autoCallFlag, option</a>: <a href="#ICS-options">ICS options</a></li>
4218 <li><a href="#index-autocomm_002c-option-324">autocomm, option</a>: <a href="#ICS-options">ICS options</a></li>
4219 <li><a href="#index-autoComment_002c-option-325">autoComment, option</a>: <a href="#ICS-options">ICS options</a></li>
4220 <li><a href="#index-autoCopyPV_002c-option-506">autoCopyPV, option</a>: <a href="#User-interface-options">User interface options</a></li>
4221 <li><a href="#index-autoflag_002c-option-326">autoflag, option</a>: <a href="#ICS-options">ICS options</a></li>
4222 <li><a href="#index-autoflip_002c-option-448">autoflip, option</a>: <a href="#User-interface-options">User interface options</a></li>
4223 <li><a href="#index-autoFlipView_002c-option-449">autoFlipView, option</a>: <a href="#User-interface-options">User interface options</a></li>
4224 <li><a href="#index-autoKibitz_002c-option-330">autoKibitz, option</a>: <a href="#ICS-options">ICS options</a></li>
4225 <li><a href="#index-autoObserve_002c-option-329">autoObserve, option</a>: <a href="#ICS-options">ICS options</a></li>
4226 <li><a href="#index-autoraise_002c-option-446">autoraise, option</a>: <a href="#User-interface-options">User interface options</a></li>
4227 <li><a href="#index-autoRaiseBoard_002c-option-447">autoRaiseBoard, option</a>: <a href="#User-interface-options">User interface options</a></li>
4228 <li><a href="#index-autoRefresh_002c-option-333">autoRefresh, option</a>: <a href="#ICS-options">ICS options</a></li>
4229 <li><a href="#index-autosave_002c-option-398">autosave, option</a>: <a href="#Load-and-Save-options">Load and Save options</a></li>
4230 <li><a href="#index-autoSaveGames_002c-option-399">autoSaveGames, option</a>: <a href="#Load-and-Save-options">Load and Save options</a></li>
4231 <li><a href="#index-Back-to-Start_002c-Menu-Item-38">Back to Start, Menu Item</a>: <a href="#Edit-Menu">Edit Menu</a></li>
4232 <li><a href="#index-Background-Observe_002c-Menu-Item-129">Background Observe, Menu Item</a>: <a href="#Options-Menu">Options Menu</a></li>
4233 <li><a href="#index-backgroundObserve_002c-option-334">backgroundObserve, option</a>: <a href="#ICS-options">ICS options</a></li>
4234 <li><a href="#index-Backward_002c-Menu-Item-34">Backward, Menu Item</a>: <a href="#Edit-Menu">Edit Menu</a></li>
4235 <li><a href="#index-Basic-operation-3">Basic operation</a>: <a href="#Basic-operation">Basic operation</a></li>
4236 <li><a href="#index-bell_002c-option-429">bell, option</a>: <a href="#User-interface-options">User interface options</a></li>
4237 <li><a href="#index-bitmapDirectory_002c-option-484">bitmapDirectory, option</a>: <a href="#User-interface-options">User interface options</a></li>
4238 <li><a href="#index-blackPieceColor_002c-option-489">blackPieceColor, option</a>: <a href="#User-interface-options">User interface options</a></li>
4239 <li><a href="#index-blind_002c-option-469">blind, option</a>: <a href="#User-interface-options">User interface options</a></li>
4240 <li><a href="#index-Blindfold_002c-Menu-Item-101">Blindfold, Menu Item</a>: <a href="#Options-Menu">Options Menu</a></li>
4241 <li><a href="#index-blindfold_002c-option-470">blindfold, option</a>: <a href="#User-interface-options">User interface options</a></li>
4242 <li><a href="#index-bm_002c-option-483">bm, option</a>: <a href="#User-interface-options">User interface options</a></li>
4243 <li><a href="#index-board-size-442">board size</a>: <a href="#User-interface-options">User interface options</a></li>
4244 <li><a href="#index-Board_002c-Menu-Item-52">Board, Menu Item</a>: <a href="#View-Menu">View Menu</a></li>
4245 <li><a href="#index-boardHeight_002c-option-526">boardHeight, option</a>: <a href="#Other-options">Other options</a></li>
4246 <li><a href="#index-boardSize_002c-option-441">boardSize, option</a>: <a href="#User-interface-options">User interface options</a></li>
4247 <li><a href="#index-boardWidth_002c-option-527">boardWidth, option</a>: <a href="#Other-options">Other options</a></li>
4248 <li><a href="#index-Book_002c-Menu-Item-88">Book, Menu Item</a>: <a href="#Engine-Menu">Engine Menu</a></li>
4249 <li><a href="#index-bookDepth_002c-option-273">bookDepth, option</a>: <a href="#UCI-_002b-WB-Engine-Settings">UCI + WB Engine Settings</a></li>
4250 <li><a href="#index-bookVariation_002c-option-274">bookVariation, option</a>: <a href="#UCI-_002b-WB-Engine-Settings">UCI + WB Engine Settings</a></li>
4251 <li><a href="#index-Bug-reports-571">Bug reports</a>: <a href="#Problems">Problems</a></li>
4252 <li><a href="#index-Bugs-570">Bugs</a>: <a href="#Problems">Problems</a></li>
4253 <li><a href="#index-Bugs-569">Bugs</a>: <a href="#Limitations">Limitations</a></li>
4254 <li><a href="#index-buttons_002c-option-454">buttons, option</a>: <a href="#User-interface-options">User interface options</a></li>
4255 <li><a href="#index-Call-Flag_002c-Menu-Item-70">Call Flag, Menu Item</a>: <a href="#Action-Menu">Action Menu</a></li>
4256 <li><a href="#index-checkMates_002c-option-515">checkMates, option</a>: <a href="#Adjudication-Options">Adjudication Options</a></li>
4257 <li><a href="#index-Chess-engine-options-191">Chess engine options</a>: <a href="#Chess-engine-options">Chess engine options</a></li>
4258 <li><a href="#index-CHESSDIR-567">CHESSDIR</a>: <a href="#Environment">Environment</a></li>
4259 <li><a href="#index-clock_002c-option-198">clock, option</a>: <a href="#Chess-engine-options">Chess engine options</a></li>
4260 <li><a href="#index-clockFont_002c-option-476">clockFont, option</a>: <a href="#User-interface-options">User interface options</a></li>
4261 <li><a href="#index-clockMode_002c-option-199">clockMode, option</a>: <a href="#Chess-engine-options">Chess engine options</a></li>
4262 <li><a href="#index-CloneTourney_002c-Menu-Item-161">CloneTourney, Menu Item</a>: <a href="#Options-Menu">Options Menu</a></li>
4263 <li><a href="#index-cmail-577">cmail</a>: <a href="#CMail">CMail</a></li>
4264 <li><a href="#index-colorChallenge_002c-option-364">colorChallenge, option</a>: <a href="#ICS-options">ICS options</a></li>
4265 <li><a href="#index-colorChannel_002c-option-361">colorChannel, option</a>: <a href="#ICS-options">ICS options</a></li>
4266 <li><a href="#index-colorChannel1_002c-option-360">colorChannel1, option</a>: <a href="#ICS-options">ICS options</a></li>
4267 <li><a href="#index-colorCShout_002c-option-359">colorCShout, option</a>: <a href="#ICS-options">ICS options</a></li>
4268 <li><a href="#index-Colorize-Messages_002c-Menu-Item-142">Colorize Messages, Menu Item</a>: <a href="#Options-Menu">Options Menu</a></li>
4269 <li><a href="#index-colorize_002c-option-354">colorize, option</a>: <a href="#ICS-options">ICS options</a></li>
4270 <li><a href="#index-colorizeMessages_002c-option-355">colorizeMessages, option</a>: <a href="#ICS-options">ICS options</a></li>
4271 <li><a href="#index-colorKibitz_002c-option-362">colorKibitz, option</a>: <a href="#ICS-options">ICS options</a></li>
4272 <li><a href="#index-colorNickNames_002c-option-532">colorNickNames, option</a>: <a href="#Other-options">Other options</a></li>
4273 <li><a href="#index-colorNormal_002c-option-367">colorNormal, option</a>: <a href="#ICS-options">ICS options</a></li>
4274 <li><a href="#index-colorRequest_002c-option-365">colorRequest, option</a>: <a href="#ICS-options">ICS options</a></li>
4275 <li><a href="#index-Colors-487">Colors</a>: <a href="#User-interface-options">User interface options</a></li>
4276 <li><a href="#index-Colors-353">Colors</a>: <a href="#ICS-options">ICS options</a></li>
4277 <li><a href="#index-colorSeek_002c-option-366">colorSeek, option</a>: <a href="#ICS-options">ICS options</a></li>
4278 <li><a href="#index-colorShout_002c-option-357">colorShout, option</a>: <a href="#ICS-options">ICS options</a></li>
4279 <li><a href="#index-colorSShout_002c-option-358">colorSShout, option</a>: <a href="#ICS-options">ICS options</a></li>
4280 <li><a href="#index-colorTell_002c-option-363">colorTell, option</a>: <a href="#ICS-options">ICS options</a></li>
4281 <li><a href="#index-Comments_002c-Menu-Item-50">Comments, Menu Item</a>: <a href="#View-Menu">View Menu</a></li>
4282 <li><a href="#index-Common-Engine_002c-Menu-Item-121">Common Engine, Menu Item</a>: <a href="#Options-Menu">Options Menu</a></li>
4283 <li><a href="#index-Contributors-576">Contributors</a>: <a href="#Contributors">Contributors</a></li>
4284 <li><a href="#index-coordFont_002c-option-478">coordFont, option</a>: <a href="#User-interface-options">User interface options</a></li>
4285 <li><a href="#index-coords_002c-option-444">coords, option</a>: <a href="#User-interface-options">User interface options</a></li>
4286 <li><a href="#index-Copy-Game-List_002c-Menu-Item-23">Copy Game List, Menu Item</a>: <a href="#Edit-Menu">Edit Menu</a></li>
4287 <li><a href="#index-Copy-Game_002c-Menu-Item-21">Copy Game, Menu Item</a>: <a href="#Edit-Menu">Edit Menu</a></li>
4288 <li><a href="#index-Copy-Position_002c-Menu-Item-22">Copy Position, Menu Item</a>: <a href="#Edit-Menu">Edit Menu</a></li>
4289 <li><a href="#index-cy_002c-option-291">cy, option</a>: <a href="#Tournament-options">Tournament options</a></li>
4290 <li><a href="#index-darkBackTextureFile_002c-option-497">darkBackTextureFile, option</a>: <a href="#User-interface-options">User interface options</a></li>
4291 <li><a href="#index-darkSquareColor_002c-option-491">darkSquareColor, option</a>: <a href="#User-interface-options">User interface options</a></li>
4292 <li><a href="#index-dateThreshold_002c-option-548">dateThreshold, option</a>: <a href="#Other-options">Other options</a></li>
4293 <li><a href="#index-debug_002c-option-533">debug, option</a>: <a href="#Other-options">Other options</a></li>
4294 <li><a href="#index-debugFile_002c-option-535">debugFile, option</a>: <a href="#Other-options">Other options</a></li>
4295 <li><a href="#index-debugMode_002c-option-534">debugMode, option</a>: <a href="#Other-options">Other options</a></li>
4296 <li><a href="#index-decline_002c-ICS-command-556">decline, ICS command</a>: <a href="#Chess-Servers">Chess Servers</a></li>
4297 <li><a href="#index-Decline_002c-Menu-Item-69">Decline, Menu Item</a>: <a href="#Action-Menu">Action Menu</a></li>
4298 <li><a href="#index-Default-number-of-Games_002c-Menu-Item-151">Default number of Games, Menu Item</a>: <a href="#Options-Menu">Options Menu</a></li>
4299 <li><a href="#index-defaultCacheSizeEGTB_002c-option-280">defaultCacheSizeEGTB, option</a>: <a href="#UCI-_002b-WB-Engine-Settings">UCI + WB Engine Settings</a></li>
4300 <li><a href="#index-defaultFrcPosition_002c-option-529">defaultFrcPosition, option</a>: <a href="#Other-options">Other options</a></li>
4301 <li><a href="#index-defaultHashSize_002c-option-279">defaultHashSize, option</a>: <a href="#UCI-_002b-WB-Engine-Settings">UCI + WB Engine Settings</a></li>
4302 <li><a href="#index-defaultMatchGames_002c-option-285">defaultMatchGames, option</a>: <a href="#Tournament-options">Tournament options</a></li>
4303 <li><a href="#index-defaultPathEGTB_002c-option-281">defaultPathEGTB, option</a>: <a href="#UCI-_002b-WB-Engine-Settings">UCI + WB Engine Settings</a></li>
4304 <li><a href="#index-defaultTourneyName_002c-option-295">defaultTourneyName, option</a>: <a href="#Tournament-options">Tournament options</a></li>
4305 <li><a href="#index-delayAfterQuit_002c-option-544">delayAfterQuit, option</a>: <a href="#Other-options">Other options</a></li>
4306 <li><a href="#index-delayBeforeQuit_002c-option-543">delayBeforeQuit, option</a>: <a href="#Other-options">Other options</a></li>
4307 <li><a href="#index-Disable-own-engine-bools-be-default_002c-Menu-Item-158">Disable own engine bools be default, Menu Item</a>: <a href="#Options-Menu">Options Menu</a></li>
4308 <li><a href="#index-discourageOwnBooks_002c-option-272">discourageOwnBooks, option</a>: <a href="#UCI-_002b-WB-Engine-Settings">UCI + WB Engine Settings</a></li>
4309 <li><a href="#index-disguisePromotedPieces_002c-option-336">disguisePromotedPieces, option</a>: <a href="#ICS-options">ICS options</a></li>
4310 <li><a href="#index-display_002c-option-420">display, option</a>: <a href="#User-interface-options">User interface options</a></li>
4311 <li><a href="#index-drag_002c-option-498">drag, option</a>: <a href="#User-interface-options">User interface options</a></li>
4312 <li><a href="#index-draw_002c-ICS-command-557">draw, ICS command</a>: <a href="#Chess-Servers">Chess Servers</a></li>
4313 <li><a href="#index-Draw_002c-Menu-Item-71">Draw, Menu Item</a>: <a href="#Action-Menu">Action Menu</a></li>
4314 <li><a href="#index-Drop-Menu_002c-Menu-Item-102">Drop Menu, Menu Item</a>: <a href="#Options-Menu">Options Menu</a></li>
4315 <li><a href="#index-dropMenu_002c-option-507">dropMenu, option</a>: <a href="#User-interface-options">User interface options</a></li>
4316 <li><a href="#index-Dual-Board_002c-Menu-Item-130">Dual Board, Menu Item</a>: <a href="#Options-Menu">Options Menu</a></li>
4317 <li><a href="#index-dualBoard_002c-option-335">dualBoard, option</a>: <a href="#ICS-options">ICS options</a></li>
4318 <li><a href="#index-Edit-Book_002c-Menu-Item-30">Edit Book, Menu Item</a>: <a href="#Edit-Menu">Edit Menu</a></li>
4319 <li><a href="#index-Edit-Comment_002c-Menu-Item-29">Edit Comment, Menu Item</a>: <a href="#Edit-Menu">Edit Menu</a></li>
4320 <li><a href="#index-Edit-Game_002c-Menu-Item-26">Edit Game, Menu Item</a>: <a href="#Edit-Menu">Edit Menu</a></li>
4321 <li><a href="#index-Edit-Menu-20">Edit Menu</a>: <a href="#Edit-Menu">Edit Menu</a></li>
4322 <li><a href="#index-Edit-Position_002c-Menu-Item-27">Edit Position, Menu Item</a>: <a href="#Edit-Menu">Edit Menu</a></li>
4323 <li><a href="#index-Edit-Tags_002c-Menu-Item-28">Edit Tags, Menu Item</a>: <a href="#Edit-Menu">Edit Menu</a></li>
4324 <li><a href="#index-egtFormats_002c-option-282">egtFormats, option</a>: <a href="#UCI-_002b-WB-Engine-Settings">UCI + WB Engine Settings</a></li>
4325 <li><a href="#index-Elo-of-strongest-player_002c-Menu-Item-163">Elo of strongest player, Menu Item</a>: <a href="#Options-Menu">Options Menu</a></li>
4326 <li><a href="#index-Elo-of-weakest-player_002c-Menu-Item-164">Elo of weakest player, Menu Item</a>: <a href="#Options-Menu">Options Menu</a></li>
4327 <li><a href="#index-eloThresholdAny_002c-option-547">eloThresholdAny, option</a>: <a href="#Other-options">Other options</a></li>
4328 <li><a href="#index-eloThresholdBoth_002c-option-546">eloThresholdBoth, option</a>: <a href="#Other-options">Other options</a></li>
4329 <li><a href="#index-Engine-_00231-Settings_002c-Menu-Item-85">Engine #1 Settings, Menu Item</a>: <a href="#Engine-Menu">Engine Menu</a></li>
4330 <li><a href="#index-Engine-_00232-Settings_002c-Menu-Item-86">Engine #2 Settings, Menu Item</a>: <a href="#Engine-Menu">Engine Menu</a></li>
4331 <li><a href="#index-Engine-Menu-81">Engine Menu</a>: <a href="#Engine-Menu">Engine Menu</a></li>
4332 <li><a href="#index-Engine-Settings-251">Engine Settings</a>: <a href="#UCI-_002b-WB-Engine-Settings">UCI + WB Engine Settings</a></li>
4333 <li><a href="#index-Engine-Settings_002c-Menu-Item-84">Engine Settings, Menu Item</a>: <a href="#Engine-Menu">Engine Menu</a></li>
4334 <li><a href="#index-engineDebugOutput_002c-option-537">engineDebugOutput, option</a>: <a href="#Other-options">Other options</a></li>
4335 <li><a href="#index-Environment-variables-566">Environment variables</a>: <a href="#Environment">Environment</a></li>
4336 <li><a href="#index-evalThreshold_002c-option-457">evalThreshold, option</a>: <a href="#User-interface-options">User interface options</a></li>
4337 <li><a href="#index-evalZoom_002c-option-456">evalZoom, option</a>: <a href="#User-interface-options">User interface options</a></li>
4338 <li><a href="#index-examine_002c-ICS-command-564">examine, ICS command</a>: <a href="#Chess-Servers">Chess Servers</a></li>
4339 <li><a href="#index-Exit_002c-Menu-Item-18">Exit, Menu Item</a>: <a href="#File-Menu">File Menu</a></li>
4340 <li><a href="#index-exit_002c-option-431">exit, option</a>: <a href="#User-interface-options">User interface options</a></li>
4341 <li><a href="#index-fb_002c-option-222">fb, option</a>: <a href="#Chess-engine-options">Chess engine options</a></li>
4342 <li><a href="#index-fcp_002c-option-218">fcp, option</a>: <a href="#Chess-engine-options">Chess engine options</a></li>
4343 <li><a href="#index-fd_002c-option-228">fd, option</a>: <a href="#Chess-engine-options">Chess engine options</a></li>
4344 <li><a href="#index-fh_002c-option-224">fh, option</a>: <a href="#Chess-engine-options">Chess engine options</a></li>
4345 <li><a href="#index-File-Menu-5">File Menu</a>: <a href="#File-Menu">File Menu</a></li>
4346 <li><a href="#index-File-with-Start-Positions_002c-Menu-Item-154">File with Start Positions, Menu Item</a>: <a href="#Options-Menu">Options Menu</a></li>
4347 <li><a href="#index-find-position_002c-Menu-Item-167">find position, Menu Item</a>: <a href="#Options-Menu">Options Menu</a></li>
4348 <li><a href="#index-finger_002c-ICS-command-560">finger, ICS command</a>: <a href="#Chess-Servers">Chess Servers</a></li>
4349 <li><a href="#index-First-Black-Move_002c-Menu-Item-139">First Black Move, Menu Item</a>: <a href="#Options-Menu">Options Menu</a></li>
4350 <li><a href="#index-First-White-Move_002c-Menu-Item-138">First White Move, Menu Item</a>: <a href="#Options-Menu">Options Menu</a></li>
4351 <li><a href="#index-firstChessProgram_002c-option-219">firstChessProgram, option</a>: <a href="#Chess-engine-options">Chess engine options</a></li>
4352 <li><a href="#index-firstComputerString_002c-option-235">firstComputerString, option</a>: <a href="#Chess-engine-options">Chess engine options</a></li>
4353 <li><a href="#index-firstDirectory_002c-option-229">firstDirectory, option</a>: <a href="#Chess-engine-options">Chess engine options</a></li>
4354 <li><a href="#index-firstHasOwnBookUCI_002c-option-268">firstHasOwnBookUCI, option</a>: <a href="#UCI-_002b-WB-Engine-Settings">UCI + WB Engine Settings</a></li>
4355 <li><a href="#index-firstHost_002c-option-225">firstHost, option</a>: <a href="#Chess-engine-options">Chess engine options</a></li>
4356 <li><a href="#index-firstInitString_002c-option-233">firstInitString, option</a>: <a href="#Chess-engine-options">Chess engine options</a></li>
4357 <li><a href="#index-firstIsUCI_002c-option-255">firstIsUCI, option</a>: <a href="#UCI-_002b-WB-Engine-Settings">UCI + WB Engine Settings</a></li>
4358 <li><a href="#index-firstNeedsNoncompliantFEN_002c-option-248">firstNeedsNoncompliantFEN, option</a>: <a href="#Chess-engine-options">Chess engine options</a></li>
4359 <li><a href="#index-firstNPS_002c-option-204">firstNPS, option</a>: <a href="#Chess-engine-options">Chess engine options</a></li>
4360 <li><a href="#index-firstOptions_002c-option-246">firstOptions, option</a>: <a href="#Chess-engine-options">Chess engine options</a></li>
4361 <li><a href="#index-firstPgnName_002c-option-275">firstPgnName, option</a>: <a href="#UCI-_002b-WB-Engine-Settings">UCI + WB Engine Settings</a></li>
4362 <li><a href="#index-firstPlaysBlack_002c-option-223">firstPlaysBlack, option</a>: <a href="#Chess-engine-options">Chess engine options</a></li>
4363 <li><a href="#index-firstProtocolVersion_002c-option-241">firstProtocolVersion, option</a>: <a href="#Chess-engine-options">Chess engine options</a></li>
4364 <li><a href="#index-firstScoreAbs_002c-option-243">firstScoreAbs, option</a>: <a href="#Chess-engine-options">Chess engine options</a></li>
4365 <li><a href="#index-firstTimeOdds_002c-option-206">firstTimeOdds, option</a>: <a href="#Chess-engine-options">Chess engine options</a></li>
4366 <li><a href="#index-firstXBook_002c-option-270">firstXBook, option</a>: <a href="#UCI-_002b-WB-Engine-Settings">UCI + WB Engine Settings</a></li>
4367 <li><a href="#index-Flash-Moves_002c-Menu-Item-116">Flash Moves, Menu Item</a>: <a href="#Options-Menu">Options Menu</a></li>
4368 <li><a href="#index-Flash-Rate_002c-Menu-Item-117">Flash Rate, Menu Item</a>: <a href="#Options-Menu">Options Menu</a></li>
4369 <li><a href="#index-flash_002c-option-463">flash, option</a>: <a href="#User-interface-options">User interface options</a></li>
4370 <li><a href="#index-flashCount_002c-option-461">flashCount, option</a>: <a href="#User-interface-options">User interface options</a></li>
4371 <li><a href="#index-flashRate_002c-option-462">flashRate, option</a>: <a href="#User-interface-options">User interface options</a></li>
4372 <li><a href="#index-Flip-View_002c-Menu-Item-44">Flip View, Menu Item</a>: <a href="#View-Menu">View Menu</a></li>
4373 <li><a href="#index-flip_002c-option-450">flip, option</a>: <a href="#User-interface-options">User interface options</a></li>
4374 <li><a href="#index-flipView_002c-option-451">flipView, option</a>: <a href="#User-interface-options">User interface options</a></li>
4375 <li><a href="#index-fn_002c-option-277">fn, option</a>: <a href="#UCI-_002b-WB-Engine-Settings">UCI + WB Engine Settings</a></li>
4376 <li><a href="#index-fNoOwnBookUCI_002c-option-266">fNoOwnBookUCI, option</a>: <a href="#UCI-_002b-WB-Engine-Settings">UCI + WB Engine Settings</a></li>
4377 <li><a href="#index-Font_002c-clock-477">Font, clock</a>: <a href="#User-interface-options">User interface options</a></li>
4378 <li><a href="#index-Font_002c-coordinates-479">Font, coordinates</a>: <a href="#User-interface-options">User interface options</a></li>
4379 <li><a href="#index-Font_002c-message-481">Font, message</a>: <a href="#User-interface-options">User interface options</a></li>
4380 <li><a href="#index-fontSizeTolerance_002c-option-482">fontSizeTolerance, option</a>: <a href="#User-interface-options">User interface options</a></li>
4381 <li><a href="#index-Forward-to-End_002c-Menu-Item-40">Forward to End, Menu Item</a>: <a href="#Edit-Menu">Edit Menu</a></li>
4382 <li><a href="#index-Forward_002c-Menu-Item-36">Forward, Menu Item</a>: <a href="#Edit-Menu">Edit Menu</a></li>
4383 <li><a href="#index-fSAN_002c-option-473">fSAN, option</a>: <a href="#User-interface-options">User interface options</a></li>
4384 <li><a href="#index-fUCCI_002c-option-257">fUCCI, option</a>: <a href="#UCI-_002b-WB-Engine-Settings">UCI + WB Engine Settings</a></li>
4385 <li><a href="#index-fUCI_002c-option-253">fUCI, option</a>: <a href="#UCI-_002b-WB-Engine-Settings">UCI + WB Engine Settings</a></li>
4386 <li><a href="#index-fUSI_002c-option-259">fUSI, option</a>: <a href="#UCI-_002b-WB-Engine-Settings">UCI + WB Engine Settings</a></li>
4387 <li><a href="#index-Game-File-with-Opening-Lines_002c-Menu-Item-153">Game File with Opening Lines, Menu Item</a>: <a href="#Options-Menu">Options Menu</a></li>
4388 <li><a href="#index-Game-List-Tags_002c-Menu-Item-172">Game List Tags, Menu Item</a>: <a href="#Options-Menu">Options Menu</a></li>
4389 <li><a href="#index-Game-List-Tags_002c-Menu-Item-53">Game List Tags, Menu Item</a>: <a href="#View-Menu">View Menu</a></li>
4390 <li><a href="#index-Game-Number_002c-Menu-Item-155">Game Number, Menu Item</a>: <a href="#Options-Menu">Options Menu</a></li>
4391 <li><a href="#index-gameListTags_002c-option-412">gameListTags, option</a>: <a href="#Load-and-Save-options">Load and Save options</a></li>
4392 <li><a href="#index-games_002c-ICS-command-554">games, ICS command</a>: <a href="#Chess-Servers">Chess Servers</a></li>
4393 <li><a href="#index-gateway_002c-option-315">gateway, option</a>: <a href="#ICS-options">ICS options</a></li>
4394 <li><a href="#index-General-Options_002c-Menu-Item-94">General Options, Menu Item</a>: <a href="#Options-Menu">Options Menu</a></li>
4395 <li><a href="#index-geometry_002c-option-421">geometry, option</a>: <a href="#User-interface-options">User interface options</a></li>
4396 <li><a href="#index-Get-Move-List_002c-Menu-Item-131">Get Move List, Menu Item</a>: <a href="#Options-Menu">Options Menu</a></li>
4397 <li><a href="#index-getMoveList_002c-option-338">getMoveList, option</a>: <a href="#ICS-options">ICS options</a></li>
4398 <li><a href="#index-Help-Menu-177">Help Menu</a>: <a href="#Help-Menu">Help Menu</a></li>
4399 <li><a href="#index-help_002c-ICS-command-552">help, ICS command</a>: <a href="#Chess-Servers">Chess Servers</a></li>
4400 <li><a href="#index-Hide-Thinking_002c-Menu-Item-103">Hide Thinking, Menu Item</a>: <a href="#Options-Menu">Options Menu</a></li>
4401 <li><a href="#index-highlight-Arrow_002c-option-467">highlight Arrow, option</a>: <a href="#User-interface-options">User interface options</a></li>
4402 <li><a href="#index-Highlight-Last-Move_002c-Menu-Item-104">Highlight Last Move, Menu Item</a>: <a href="#Options-Menu">Options Menu</a></li>
4403 <li><a href="#index-Highlight-with-Arrow_002c-Menu-Item-105">Highlight with Arrow, Menu Item</a>: <a href="#Options-Menu">Options Menu</a></li>
4404 <li><a href="#index-highlight_002c-option-465">highlight, option</a>: <a href="#User-interface-options">User interface options</a></li>
4405 <li><a href="#index-highlightLastMove_002c-option-466">highlightLastMove, option</a>: <a href="#User-interface-options">User interface options</a></li>
4406 <li><a href="#index-highlightMoveWithArrow_002c-option-468">highlightMoveWithArrow, option</a>: <a href="#User-interface-options">User interface options</a></li>
4407 <li><a href="#index-highlightSquareColor_002c-option-492">highlightSquareColor, option</a>: <a href="#User-interface-options">User interface options</a></li>
4408 <li><a href="#index-Hint_002c-Menu-Item-87">Hint, Menu Item</a>: <a href="#Engine-Menu">Engine Menu</a></li>
4409 <li><a href="#index-holdingsSize_002c-option-528">holdingsSize, option</a>: <a href="#Other-options">Other options</a></li>
4410 <li><a href="#index-iconic_002c-option-422">iconic, option</a>: <a href="#User-interface-options">User interface options</a></li>
4411 <li><a href="#index-ICS-549">ICS</a>: <a href="#Chess-Servers">Chess Servers</a></li>
4412 <li><a href="#index-ICS-Alarm-Time_002c-Menu-Item-141">ICS Alarm Time, Menu Item</a>: <a href="#Options-Menu">Options Menu</a></li>
4413 <li><a href="#index-ICS-Alarm_002c-Menu-Item-140">ICS Alarm, Menu Item</a>: <a href="#Options-Menu">Options Menu</a></li>
4414 <li><a href="#index-ICS-Client_002c-Menu-Item-63">ICS Client, Menu Item</a>: <a href="#Mode-Menu">Mode Menu</a></li>
4415 <li><a href="#index-ICS-Input-Box_002c-Menu-Item-51">ICS Input Box, Menu Item</a>: <a href="#View-Menu">View Menu</a></li>
4416 <li><a href="#index-ICS-options-302">ICS options</a>: <a href="#ICS-options">ICS options</a></li>
4417 <li><a href="#index-ICS-Options_002c-Menu-Item-123">ICS Options, Menu Item</a>: <a href="#Options-Menu">Options Menu</a></li>
4418 <li><a href="#index-ICS_002c-addresses-550">ICS, addresses</a>: <a href="#Chess-Servers">Chess Servers</a></li>
4419 <li><a href="#index-ics_002c-option-304">ics, option</a>: <a href="#ICS-options">ICS options</a></li>
4420 <li><a href="#index-icsAlarm_002c-option-340">icsAlarm, option</a>: <a href="#ICS-options">ICS options</a></li>
4421 <li><a href="#index-icsAlarmTime_002c-option-341">icsAlarmTime, option</a>: <a href="#ICS-options">ICS options</a></li>
4422 <li><a href="#index-icscomm_002c-option-317">icscomm, option</a>: <a href="#ICS-options">ICS options</a></li>
4423 <li><a href="#index-icshelper_002c-option-310">icshelper, option</a>: <a href="#ICS-options">ICS options</a></li>
4424 <li><a href="#index-icshost_002c-option-306">icshost, option</a>: <a href="#ICS-options">ICS options</a></li>
4425 <li><a href="#index-icsinput_002c-option-322">icsinput, option</a>: <a href="#ICS-options">ICS options</a></li>
4426 <li><a href="#index-icslogon_002c-option-318">icslogon, option</a>: <a href="#ICS-options">ICS options</a></li>
4427 <li><a href="#index-icsport_002c-option-308">icsport, option</a>: <a href="#ICS-options">ICS options</a></li>
4428 <li><a href="#index-inc_002c-option-196">inc, option</a>: <a href="#Chess-engine-options">Chess engine options</a></li>
4429 <li><a href="#index-Info-XBoard_002c-Menu-Item-178">Info XBoard, Menu Item</a>: <a href="#Help-Menu">Help Menu</a></li>
4430 <li><a href="#index-init_002c-option-415">init, option</a>: <a href="#Load-and-Save-options">Load and Save options</a></li>
4431 <li><a href="#index-initalMode_002c-option-524">initalMode, option</a>: <a href="#Other-options">Other options</a></li>
4432 <li><a href="#index-initString_002c-option-232">initString, option</a>: <a href="#Chess-engine-options">Chess engine options</a></li>
4433 <li><a href="#index-Internet-Chess-Server-551">Internet Chess Server</a>: <a href="#Chess-Servers">Chess Servers</a></li>
4434 <li><a href="#index-internetChessServerCommPort_002c-option-316">internetChessServerCommPort, option</a>: <a href="#ICS-options">ICS options</a></li>
4435 <li><a href="#index-internetChessServerHelper_002c-option-311">internetChessServerHelper, option</a>: <a href="#ICS-options">ICS options</a></li>
4436 <li><a href="#index-internetChessServerHost_002c-option-307">internetChessServerHost, option</a>: <a href="#ICS-options">ICS options</a></li>
4437 <li><a href="#index-internetChessServerInputBox_002c-option-323">internetChessServerInputBox, option</a>: <a href="#ICS-options">ICS options</a></li>
4438 <li><a href="#index-internetChessServerLogonScript_002c-option-319">internetChessServerLogonScript, option</a>: <a href="#ICS-options">ICS options</a></li>
4439 <li><a href="#index-internetChessServerMode_002c-option-305">internetChessServerMode, option</a>: <a href="#ICS-options">ICS options</a></li>
4440 <li><a href="#index-internetChessServerPort_002c-option-309">internetChessServerPort, option</a>: <a href="#ICS-options">ICS options</a></li>
4441 <li><a href="#index-introduction-1">introduction</a>: <a href="#Top">Top</a></li>
4442 <li><a href="#index-Keys-181">Keys</a>: <a href="#Keys">Keys</a></li>
4443 <li><a href="#index-legal_002c-option-438">legal, option</a>: <a href="#User-interface-options">User interface options</a></li>
4444 <li><a href="#index-lgf_002c-option-390">lgf, option</a>: <a href="#Load-and-Save-options">Load and Save options</a></li>
4445 <li><a href="#index-lgi_002c-option-392">lgi, option</a>: <a href="#Load-and-Save-options">Load and Save options</a></li>
4446 <li><a href="#index-lightSquareColor_002c-option-490">lightSquareColor, option</a>: <a href="#User-interface-options">User interface options</a></li>
4447 <li><a href="#index-Limitations-568">Limitations</a>: <a href="#Limitations">Limitations</a></li>
4448 <li><a href="#index-liteBackTextureFile_002c-option-496">liteBackTextureFile, option</a>: <a href="#User-interface-options">User interface options</a></li>
4449 <li><a href="#index-Load-and-Save-options-389">Load and Save options</a>: <a href="#Load-and-Save-options">Load and Save options</a></li>
4450 <li><a href="#index-Load-Engine_002c-Menu-Item-83">Load Engine, Menu Item</a>: <a href="#Engine-Menu">Engine Menu</a></li>
4451 <li><a href="#index-Load-Game-Options_002c-Menu-Item-162">Load Game Options, Menu Item</a>: <a href="#Options-Menu">Options Menu</a></li>
4452 <li><a href="#index-Load-Game_002c-Menu-Item-10">Load Game, Menu Item</a>: <a href="#File-Menu">File Menu</a></li>
4453 <li><a href="#index-Load-Next-Game_002c-Menu-Item-184">Load Next Game, Menu Item</a>: <a href="#Keys">Keys</a></li>
4454 <li><a href="#index-Load-Next-Position_002c-Menu-Item-12">Load Next Position, Menu Item</a>: <a href="#File-Menu">File Menu</a></li>
4455 <li><a href="#index-Load-Position_002c-Menu-Item-11">Load Position, Menu Item</a>: <a href="#File-Menu">File Menu</a></li>
4456 <li><a href="#index-Load-Previous-Game_002c-Menu-Item-185">Load Previous Game, Menu Item</a>: <a href="#Keys">Keys</a></li>
4457 <li><a href="#index-Load-Previous-Position_002c-Menu-Item-13">Load Previous Position, Menu Item</a>: <a href="#File-Menu">File Menu</a></li>
4458 <li><a href="#index-loadGameFile_002c-option-391">loadGameFile, option</a>: <a href="#Load-and-Save-options">Load and Save options</a></li>
4459 <li><a href="#index-loadGameIndex_002c-option-393">loadGameIndex, option</a>: <a href="#Load-and-Save-options">Load and Save options</a></li>
4460 <li><a href="#index-loadPositionFile_002c-option-401">loadPositionFile, option</a>: <a href="#Load-and-Save-options">Load and Save options</a></li>
4461 <li><a href="#index-loadPositionIndex_002c-option-403">loadPositionIndex, option</a>: <a href="#Load-and-Save-options">Load and Save options</a></li>
4462 <li><a href="#index-lowTimeWarning_002c-option-342">lowTimeWarning, option</a>: <a href="#ICS-options">ICS options</a></li>
4463 <li><a href="#index-lowTimeWarningColor_002c-option-494">lowTimeWarningColor, option</a>: <a href="#User-interface-options">User interface options</a></li>
4464 <li><a href="#index-lpf_002c-option-400">lpf, option</a>: <a href="#Load-and-Save-options">Load and Save options</a></li>
4465 <li><a href="#index-lpi_002c-option-402">lpi, option</a>: <a href="#Load-and-Save-options">Load and Save options</a></li>
4466 <li><a href="#index-Machine-Black_002c-Menu-Item-57">Machine Black, Menu Item</a>: <a href="#Mode-Menu">Mode Menu</a></li>
4467 <li><a href="#index-Machine-match_002c-Menu-Item-64">Machine match, Menu Item</a>: <a href="#Mode-Menu">Mode Menu</a></li>
4468 <li><a href="#index-Machine-White_002c-Menu-Item-56">Machine White, Menu Item</a>: <a href="#Mode-Menu">Mode Menu</a></li>
4469 <li><a href="#index-Mail-Move_002c-Menu-Item-16">Mail Move, Menu Item</a>: <a href="#File-Menu">File Menu</a></li>
4470 <li><a href="#index-Major-modes-2">Major modes</a>: <a href="#Major-modes">Major modes</a></li>
4471 <li><a href="#index-Man-XBoard_002c-Menu-Item-179">Man XBoard, Menu Item</a>: <a href="#Help-Menu">Help Menu</a></li>
4472 <li><a href="#index-Match-Options_002c-Menu-Item-143">Match Options, Menu Item</a>: <a href="#Options-Menu">Options Menu</a></li>
4473 <li><a href="#index-matchGames_002c-option-214">matchGames, option</a>: <a href="#Chess-engine-options">Chess engine options</a></li>
4474 <li><a href="#index-matchMode_002c-option-216">matchMode, option</a>: <a href="#Chess-engine-options">Chess engine options</a></li>
4475 <li><a href="#index-matchPause_002c-option-286">matchPause, option</a>: <a href="#Tournament-options">Tournament options</a></li>
4476 <li><a href="#index-materialDraws_002c-option-517">materialDraws, option</a>: <a href="#Adjudication-Options">Adjudication Options</a></li>
4477 <li><a href="#index-Menu_002c-Action-66">Menu, Action</a>: <a href="#Action-Menu">Action Menu</a></li>
4478 <li><a href="#index-Menu_002c-Edit-19">Menu, Edit</a>: <a href="#Edit-Menu">Edit Menu</a></li>
4479 <li><a href="#index-Menu_002c-Engine-82">Menu, Engine</a>: <a href="#Engine-Menu">Engine Menu</a></li>
4480 <li><a href="#index-Menu_002c-File-6">Menu, File</a>: <a href="#File-Menu">File Menu</a></li>
4481 <li><a href="#index-Menu_002c-Help-176">Menu, Help</a>: <a href="#Help-Menu">Help Menu</a></li>
4482 <li><a href="#index-Menu_002c-Mode-54">Menu, Mode</a>: <a href="#Mode-Menu">Mode Menu</a></li>
4483 <li><a href="#index-Menu_002c-Options-92">Menu, Options</a>: <a href="#Options-Menu">Options Menu</a></li>
4484 <li><a href="#index-Menu_002c-View-42">Menu, View</a>: <a href="#View-Menu">View Menu</a></li>
4485 <li><a href="#index-Menus-4">Menus</a>: <a href="#Menus">Menus</a></li>
4486 <li><a href="#index-messageFont_002c-option-480">messageFont, option</a>: <a href="#User-interface-options">User interface options</a></li>
4487 <li><a href="#index-mg_002c-option-213">mg, option</a>: <a href="#Chess-engine-options">Chess engine options</a></li>
4488 <li><a href="#index-mm_002c-option-215">mm, option</a>: <a href="#Chess-engine-options">Chess engine options</a></li>
4489 <li><a href="#index-Mode-Menu-55">Mode Menu</a>: <a href="#Mode-Menu">Mode Menu</a></li>
4490 <li><a href="#index-mode_002c-option-523">mode, option</a>: <a href="#Other-options">Other options</a></li>
4491 <li><a href="#index-mono_002c-option-458">mono, option</a>: <a href="#User-interface-options">User interface options</a></li>
4492 <li><a href="#index-monoMode_002c-option-459">monoMode, option</a>: <a href="#User-interface-options">User interface options</a></li>
4493 <li><a href="#index-Move-Now_002c-Menu-Item-89">Move Now, Menu Item</a>: <a href="#Engine-Menu">Engine Menu</a></li>
4494 <li><a href="#index-Move-Sound_002c-Menu-Item-106">Move Sound, Menu Item</a>: <a href="#Options-Menu">Options Menu</a></li>
4495 <li><a href="#index-moves_002c-option-337">moves, option</a>: <a href="#ICS-options">ICS options</a></li>
4496 <li><a href="#index-movesound_002c-option-428">movesound, option</a>: <a href="#User-interface-options">User interface options</a></li>
4497 <li><a href="#index-movesPerSession_002c-option-195">movesPerSession, option</a>: <a href="#Chess-engine-options">Chess engine options</a></li>
4498 <li><a href="#index-mps_002c-option-194">mps, option</a>: <a href="#Chess-engine-options">Chess engine options</a></li>
4499 <li><a href="#index-msLoginDelay_002c-option-321">msLoginDelay, option</a>: <a href="#ICS-options">ICS options</a></li>
4500 <li><a href="#index-nameOfDebugFile_002c-option-536">nameOfDebugFile, option</a>: <a href="#Other-options">Other options</a></li>
4501 <li><a href="#index-ncp_002c-option-521">ncp, option</a>: <a href="#Other-options">Other options</a></li>
4502 <li><a href="#index-New-Game_002c-Menu-Item-7">New Game, Menu Item</a>: <a href="#File-Menu">File Menu</a></li>
4503 <li><a href="#index-New-Shuffle-Game_002c-Menu-Item-8">New Shuffle Game, Menu Item</a>: <a href="#File-Menu">File Menu</a></li>
4504 <li><a href="#index-New-variant_002c-Menu-Item-9">New variant, Menu Item</a>: <a href="#File-Menu">File Menu</a></li>
4505 <li><a href="#index-niceEngines_002c-option-245">niceEngines, option</a>: <a href="#Chess-engine-options">Chess engine options</a></li>
4506 <li><a href="#index-noChessProgram_002c-option-522">noChessProgram, option</a>: <a href="#Other-options">Other options</a></li>
4507 <li><a href="#index-noGUI_002c-option-424">noGUI, option</a>: <a href="#User-interface-options">User interface options</a></li>
4508 <li><a href="#index-null-move-60">null move</a>: <a href="#Mode-Menu">Mode Menu</a></li>
4509 <li><a href="#index-number-of-consecutive-positions_002c-Menu-Item-168">number of consecutive positions, Menu Item</a>: <a href="#Options-Menu">Options Menu</a></li>
4510 <li><a href="#index-Number-of-tourney-cycles_002c-Menu-Item-150">Number of tourney cycles, Menu Item</a>: <a href="#Options-Menu">Options Menu</a></li>
4511 <li><a href="#index-observe_002c-ICS-command-563">observe, ICS command</a>: <a href="#Chess-Servers">Chess Servers</a></li>
4512 <li><a href="#index-oldmoves_002c-ICS-command-565">oldmoves, ICS command</a>: <a href="#Chess-Servers">Chess Servers</a></li>
4513 <li><a href="#index-oldsave_002c-option-410">oldsave, option</a>: <a href="#Load-and-Save-options">Load and Save options</a></li>
4514 <li><a href="#index-oldSaveStyle_002c-option-411">oldSaveStyle, option</a>: <a href="#Load-and-Save-options">Load and Save options</a></li>
4515 <li><a href="#index-One_002dClick-Moving_002c-Menu-Item-107">One-Click Moving, Menu Item</a>: <a href="#Options-Menu">Options Menu</a></li>
4516 <li><a href="#index-oneClickMove_002c-option-427">oneClickMove, option</a>: <a href="#User-interface-options">User interface options</a></li>
4517 <li><a href="#index-Options-188">Options</a>: <a href="#Options">Options</a></li>
4518 <li><a href="#index-Options-Menu-93">Options Menu</a>: <a href="#Options-Menu">Options Menu</a></li>
4519 <li><a href="#index-Options_002c-adjudication-512">Options, adjudication</a>: <a href="#Adjudication-Options">Adjudication Options</a></li>
4520 <li><a href="#index-options_002c-Chess-engine-190">options, Chess engine</a>: <a href="#Chess-engine-options">Chess engine options</a></li>
4521 <li><a href="#index-Options_002c-ICS-303">Options, ICS</a>: <a href="#ICS-options">ICS options</a></li>
4522 <li><a href="#index-Options_002c-Load-and-Save-388">Options, Load and Save</a>: <a href="#Load-and-Save-options">Load and Save options</a></li>
4523 <li><a href="#index-Options_002c-miscellaneous-520">Options, miscellaneous</a>: <a href="#Other-options">Other options</a></li>
4524 <li><a href="#index-Options_002c-Tournament-284">Options, Tournament</a>: <a href="#Tournament-options">Tournament options</a></li>
4525 <li><a href="#index-Options_002c-User-interface-419">Options, User interface</a>: <a href="#User-interface-options">User interface options</a></li>
4526 <li><a href="#index-Other-programs-578">Other programs</a>: <a href="#Other-programs">Other programs</a></li>
4527 <li><a href="#index-overrideLineGap_002c-option-443">overrideLineGap, option</a>: <a href="#User-interface-options">User interface options</a></li>
4528 <li><a href="#index-pairingEngine_002c-option-296">pairingEngine, option</a>: <a href="#Tournament-options">Tournament options</a></li>
4529 <li><a href="#index-participants_002c-option-293">participants, option</a>: <a href="#Tournament-options">Tournament options</a></li>
4530 <li><a href="#index-Paste-Game_002c-Menu-Item-24">Paste Game, Menu Item</a>: <a href="#Edit-Menu">Edit Menu</a></li>
4531 <li><a href="#index-Paste-Position_002c-Menu-Item-25">Paste Position, Menu Item</a>: <a href="#Edit-Menu">Edit Menu</a></li>
4532 <li><a href="#index-Pause_002c-Menu-Item-65">Pause, Menu Item</a>: <a href="#Mode-Menu">Mode Menu</a></li>
4533 <li><a href="#index-Periodic-Updates_002c-Menu-Item-108">Periodic Updates, Menu Item</a>: <a href="#Options-Menu">Options Menu</a></li>
4534 <li><a href="#index-periodic_002c-option-471">periodic, option</a>: <a href="#User-interface-options">User interface options</a></li>
4535 <li><a href="#index-periodicUpdates_002c-option-472">periodicUpdates, option</a>: <a href="#User-interface-options">User interface options</a></li>
4536 <li><a href="#index-pgnEventHeader_002c-option-407">pgnEventHeader, option</a>: <a href="#Load-and-Save-options">Load and Save options</a></li>
4537 <li><a href="#index-pgnExtendedInfo_002c-option-406">pgnExtendedInfo, option</a>: <a href="#Load-and-Save-options">Load and Save options</a></li>
4538 <li><a href="#index-pgnNumberTag_002c-option-408">pgnNumberTag, option</a>: <a href="#Load-and-Save-options">Load and Save options</a></li>
4539 <li><a href="#index-pieceMenu_002c-option-508">pieceMenu, option</a>: <a href="#User-interface-options">User interface options</a></li>
4540 <li><a href="#index-pieceNickNames_002c-option-531">pieceNickNames, option</a>: <a href="#Other-options">Other options</a></li>
4541 <li><a href="#index-pieceToCharTable_002c-option-530">pieceToCharTable, option</a>: <a href="#Other-options">Other options</a></li>
4542 <li><a href="#index-pixmap_002c-option-485">pixmap, option</a>: <a href="#User-interface-options">User interface options</a></li>
4543 <li><a href="#index-pixmapDirectory_002c-option-486">pixmapDirectory, option</a>: <a href="#User-interface-options">User interface options</a></li>
4544 <li><a href="#index-polyglotBook_002c-option-265">polyglotBook, option</a>: <a href="#UCI-_002b-WB-Engine-Settings">UCI + WB Engine Settings</a></li>
4545 <li><a href="#index-polyglotDir_002c-option-263">polyglotDir, option</a>: <a href="#UCI-_002b-WB-Engine-Settings">UCI + WB Engine Settings</a></li>
4546 <li><a href="#index-Ponder-Next-Move_002c-Menu-Item-109">Ponder Next Move, Menu Item</a>: <a href="#Options-Menu">Options Menu</a></li>
4547 <li><a href="#index-ponder_002c-option-211">ponder, option</a>: <a href="#Chess-engine-options">Chess engine options</a></li>
4548 <li><a href="#index-ponderNextMove_002c-option-212">ponderNextMove, option</a>: <a href="#Chess-engine-options">Chess engine options</a></li>
4549 <li><a href="#index-Popup-Exit-Message_002c-Menu-Item-110">Popup Exit Message, Menu Item</a>: <a href="#Options-Menu">Options Menu</a></li>
4550 <li><a href="#index-Popup-Move-Errors_002c-Menu-Item-111">Popup Move Errors, Menu Item</a>: <a href="#Options-Menu">Options Menu</a></li>
4551 <li><a href="#index-popup_002c-option-433">popup, option</a>: <a href="#User-interface-options">User interface options</a></li>
4552 <li><a href="#index-popupExitMessage_002c-option-432">popupExitMessage, option</a>: <a href="#User-interface-options">User interface options</a></li>
4553 <li><a href="#index-popupMoveErrors_002c-option-434">popupMoveErrors, option</a>: <a href="#User-interface-options">User interface options</a></li>
4554 <li><a href="#index-Position-Number_002c-Menu-Item-156">Position Number, Menu Item</a>: <a href="#Options-Menu">Options Menu</a></li>
4555 <li><a href="#index-pre_002c-option-343">pre, option</a>: <a href="#ICS-options">ICS options</a></li>
4556 <li><a href="#index-preblack_002c-option-347">preblack, option</a>: <a href="#ICS-options">ICS options</a></li>
4557 <li><a href="#index-Premove-Black_002c-Menu-Item-137">Premove Black, Menu Item</a>: <a href="#Options-Menu">Options Menu</a></li>
4558 <li><a href="#index-Premove-White_002c-Menu-Item-136">Premove White, Menu Item</a>: <a href="#Options-Menu">Options Menu</a></li>
4559 <li><a href="#index-Premove_002c-Menu-Item-135">Premove, Menu Item</a>: <a href="#Options-Menu">Options Menu</a></li>
4560 <li><a href="#index-premove_002c-option-344">premove, option</a>: <a href="#ICS-options">ICS options</a></li>
4561 <li><a href="#index-premoveBlack_002c-option-348">premoveBlack, option</a>: <a href="#ICS-options">ICS options</a></li>
4562 <li><a href="#index-premoveBlackText_002c-option-350">premoveBlackText, option</a>: <a href="#ICS-options">ICS options</a></li>
4563 <li><a href="#index-premoveHighlightColor_002c-option-493">premoveHighlightColor, option</a>: <a href="#User-interface-options">User interface options</a></li>
4564 <li><a href="#index-premoveWhite_002c-option-346">premoveWhite, option</a>: <a href="#ICS-options">ICS options</a></li>
4565 <li><a href="#index-premoveWhiteText_002c-option-349">premoveWhiteText, option</a>: <a href="#ICS-options">ICS options</a></li>
4566 <li><a href="#index-prewhite_002c-option-345">prewhite, option</a>: <a href="#ICS-options">ICS options</a></li>
4567 <li><a href="#index-Problems-573">Problems</a>: <a href="#Problems">Problems</a></li>
4568 <li><a href="#index-queen_002c-option-435">queen, option</a>: <a href="#User-interface-options">User interface options</a></li>
4569 <li><a href="#index-Quiet-Play_002c-Menu-Item-132">Quiet Play, Menu Item</a>: <a href="#Options-Menu">Options Menu</a></li>
4570 <li><a href="#index-quiet_002c-option-351">quiet, option</a>: <a href="#ICS-options">ICS options</a></li>
4571 <li><a href="#index-quietPlay_002c-option-352">quietPlay, option</a>: <a href="#ICS-options">ICS options</a></li>
4572 <li><a href="#index-recentEngineList_002c-option-426">recentEngineList, option</a>: <a href="#User-interface-options">User interface options</a></li>
4573 <li><a href="#index-recentEngines_002c-option-425">recentEngines, option</a>: <a href="#User-interface-options">User interface options</a></li>
4574 <li><a href="#index-Recently-Used-Engines_002c-In-Menu-91">Recently Used Engines, In Menu</a>: <a href="#Engine-Menu">Engine Menu</a></li>
4575 <li><a href="#index-Reload-CMail-Message_002c-Menu-Item-17">Reload CMail Message, Menu Item</a>: <a href="#File-Menu">File Menu</a></li>
4576 <li><a href="#index-Reload-Same-Game_002c-Menu-Item-186">Reload Same Game, Menu Item</a>: <a href="#Keys">Keys</a></li>
4577 <li><a href="#index-Reload-Same-Position_002c-Menu-Item-187">Reload Same Position, Menu Item</a>: <a href="#Keys">Keys</a></li>
4578 <li><a href="#index-remoteShell_002c-option-539">remoteShell, option</a>: <a href="#Other-options">Other options</a></li>
4579 <li><a href="#index-remoteUser_002c-option-541">remoteUser, option</a>: <a href="#Other-options">Other options</a></li>
4580 <li><a href="#index-Replace-Engine_002c-Menu-Item-159">Replace Engine, Menu Item</a>: <a href="#Options-Menu">Options Menu</a></li>
4581 <li><a href="#index-Reporting-bugs-572">Reporting bugs</a>: <a href="#Problems">Problems</a></li>
4582 <li><a href="#index-Reporting-problems-574">Reporting problems</a>: <a href="#Problems">Problems</a></li>
4583 <li><a href="#index-Resign_002c-Menu-Item-74">Resign, Menu Item</a>: <a href="#Action-Menu">Action Menu</a></li>
4584 <li><a href="#index-resource-name_002c-option-423">resource name, option</a>: <a href="#User-interface-options">User interface options</a></li>
4585 <li><a href="#index-results_002c-option-294">results, option</a>: <a href="#Tournament-options">Tournament options</a></li>
4586 <li><a href="#index-Retract-Move_002c-Menu-Item-90">Retract Move, Menu Item</a>: <a href="#Engine-Menu">Engine Menu</a></li>
4587 <li><a href="#index-reuse_002c-option-237">reuse, option</a>: <a href="#Chess-engine-options">Chess engine options</a></li>
4588 <li><a href="#index-reuse2_002c-option-239">reuse2, option</a>: <a href="#Chess-engine-options">Chess engine options</a></li>
4589 <li><a href="#index-reuseFirst_002c-option-238">reuseFirst, option</a>: <a href="#Chess-engine-options">Chess engine options</a></li>
4590 <li><a href="#index-reuseSecond_002c-option-240">reuseSecond, option</a>: <a href="#Chess-engine-options">Chess engine options</a></li>
4591 <li><a href="#index-Revert_002c-Menu-Item-31">Revert, Menu Item</a>: <a href="#Edit-Menu">Edit Menu</a></li>
4592 <li><a href="#index-Rewind-Index-after_002c-Menu-Item-157">Rewind Index after, Menu Item</a>: <a href="#Options-Menu">Options Menu</a></li>
4593 <li><a href="#index-ringBellAfterMoves_002c-option-430">ringBellAfterMoves, option</a>: <a href="#User-interface-options">User interface options</a></li>
4594 <li><a href="#index-rsh_002c-option-538">rsh, option</a>: <a href="#Other-options">Other options</a></li>
4595 <li><a href="#index-ruleMoves_002c-option-519">ruleMoves, option</a>: <a href="#Adjudication-Options">Adjudication Options</a></li>
4596 <li><a href="#index-ruser_002c-option-540">ruser, option</a>: <a href="#Other-options">Other options</a></li>
4597 <li><a href="#index-sameColorGames_002c-option-217">sameColorGames, option</a>: <a href="#Chess-engine-options">Chess engine options</a></li>
4598 <li><a href="#index-Save-Game-Options_002c-Menu-Item-171">Save Game Options, Menu Item</a>: <a href="#Options-Menu">Options Menu</a></li>
4599 <li><a href="#index-Save-Game_002c-Menu-Item-14">Save Game, Menu Item</a>: <a href="#File-Menu">File Menu</a></li>
4600 <li><a href="#index-Save-Position_002c-Menu-Item-15">Save Position, Menu Item</a>: <a href="#File-Menu">File Menu</a></li>
4601 <li><a href="#index-Save-Settings-Now_002c-Menu-Item-174">Save Settings Now, Menu Item</a>: <a href="#Options-Menu">Options Menu</a></li>
4602 <li><a href="#index-Save-Settings-on-Exit_002c-Menu-Item-175">Save Settings on Exit, Menu Item</a>: <a href="#Options-Menu">Options Menu</a></li>
4603 <li><a href="#index-Save-Tourney-Games_002c-Menu-Item-152">Save Tourney Games, Menu Item</a>: <a href="#Options-Menu">Options Menu</a></li>
4604 <li><a href="#index-saveGameFile_002c-option-397">saveGameFile, option</a>: <a href="#Load-and-Save-options">Load and Save options</a></li>
4605 <li><a href="#index-saveOutOfBookInfo_002c-option-409">saveOutOfBookInfo, option</a>: <a href="#Load-and-Save-options">Load and Save options</a></li>
4606 <li><a href="#index-savePositionFile_002c-option-405">savePositionFile, option</a>: <a href="#Load-and-Save-options">Load and Save options</a></li>
4607 <li><a href="#index-saveSettingsFile_002c-option-413">saveSettingsFile, option</a>: <a href="#Load-and-Save-options">Load and Save options</a></li>
4608 <li><a href="#index-saveSettingsOnExit_002c-option-417">saveSettingsOnExit, option</a>: <a href="#Load-and-Save-options">Load and Save options</a></li>
4609 <li><a href="#index-Scores-in-Move-List_002c-Menu-Item-112">Scores in Move List, Menu Item</a>: <a href="#Options-Menu">Options Menu</a></li>
4610 <li><a href="#index-scoreWhite_002c-option-511">scoreWhite, option</a>: <a href="#User-interface-options">User interface options</a></li>
4611 <li><a href="#index-scp_002c-option-220">scp, option</a>: <a href="#Chess-engine-options">Chess engine options</a></li>
4612 <li><a href="#index-sd_002c-option-202">sd, option</a>: <a href="#Chess-engine-options">Chess engine options</a></li>
4613 <li><a href="#index-Search-mode_002c-Menu-Item-166">Search mode, Menu Item</a>: <a href="#Options-Menu">Options Menu</a></li>
4614 <li><a href="#index-searchDepth_002c-option-203">searchDepth, option</a>: <a href="#Chess-engine-options">Chess engine options</a></li>
4615 <li><a href="#index-searchMode_002c-option-545">searchMode, option</a>: <a href="#Other-options">Other options</a></li>
4616 <li><a href="#index-searchTime_002c-option-201">searchTime, option</a>: <a href="#Chess-engine-options">Chess engine options</a></li>
4617 <li><a href="#index-secondChessProgram_002c-option-221">secondChessProgram, option</a>: <a href="#Chess-engine-options">Chess engine options</a></li>
4618 <li><a href="#index-secondComputerString_002c-option-236">secondComputerString, option</a>: <a href="#Chess-engine-options">Chess engine options</a></li>
4619 <li><a href="#index-secondDirectory_002c-option-231">secondDirectory, option</a>: <a href="#Chess-engine-options">Chess engine options</a></li>
4620 <li><a href="#index-secondHasOwnBookUCI_002c-option-269">secondHasOwnBookUCI, option</a>: <a href="#UCI-_002b-WB-Engine-Settings">UCI + WB Engine Settings</a></li>
4621 <li><a href="#index-secondHost_002c-option-227">secondHost, option</a>: <a href="#Chess-engine-options">Chess engine options</a></li>
4622 <li><a href="#index-secondInitString_002c-option-234">secondInitString, option</a>: <a href="#Chess-engine-options">Chess engine options</a></li>
4623 <li><a href="#index-secondIsUCI_002c-option-256">secondIsUCI, option</a>: <a href="#UCI-_002b-WB-Engine-Settings">UCI + WB Engine Settings</a></li>
4624 <li><a href="#index-secondNeedsNoncompliantFEN_002c-option-249">secondNeedsNoncompliantFEN, option</a>: <a href="#Chess-engine-options">Chess engine options</a></li>
4625 <li><a href="#index-secondNPS_002c-option-205">secondNPS, option</a>: <a href="#Chess-engine-options">Chess engine options</a></li>
4626 <li><a href="#index-secondOptions_002c-option-247">secondOptions, option</a>: <a href="#Chess-engine-options">Chess engine options</a></li>
4627 <li><a href="#index-secondPgnName_002c-option-276">secondPgnName, option</a>: <a href="#UCI-_002b-WB-Engine-Settings">UCI + WB Engine Settings</a></li>
4628 <li><a href="#index-secondProtocolVersion_002c-option-242">secondProtocolVersion, option</a>: <a href="#Chess-engine-options">Chess engine options</a></li>
4629 <li><a href="#index-secondScoreAbs_002c-option-244">secondScoreAbs, option</a>: <a href="#Chess-engine-options">Chess engine options</a></li>
4630 <li><a href="#index-secondTimeOdds_002c-option-207">secondTimeOdds, option</a>: <a href="#Chess-engine-options">Chess engine options</a></li>
4631 <li><a href="#index-secondXBook_002c-option-271">secondXBook, option</a>: <a href="#UCI-_002b-WB-Engine-Settings">UCI + WB Engine Settings</a></li>
4632 <li><a href="#index-seedBase_002c-option-301">seedBase, option</a>: <a href="#Tournament-options">Tournament options</a></li>
4633 <li><a href="#index-Seek-Graph_002c-Menu-Item-133">Seek Graph, Menu Item</a>: <a href="#Options-Menu">Options Menu</a></li>
4634 <li><a href="#index-seekGraph_002c-option-331">seekGraph, option</a>: <a href="#ICS-options">ICS options</a></li>
4635 <li><a href="#index-Select-Engine_002c-Menu-Item-147">Select Engine, Menu Item</a>: <a href="#Options-Menu">Options Menu</a></li>
4636 <li><a href="#index-set_002c-ICS-command-562">set, ICS command</a>: <a href="#Chess-Servers">Chess Servers</a></li>
4637 <li><a href="#index-Settings_002c-Engine-252">Settings, Engine</a>: <a href="#UCI-_002b-WB-Engine-Settings">UCI + WB Engine Settings</a></li>
4638 <li><a href="#index-SettingsFile_002c-option-414">SettingsFile, option</a>: <a href="#Load-and-Save-options">Load and Save options</a></li>
4639 <li><a href="#index-sg_002c-option-332">sg, option</a>: <a href="#ICS-options">ICS options</a></li>
4640 <li><a href="#index-sgf_002c-option-396">sgf, option</a>: <a href="#Load-and-Save-options">Load and Save options</a></li>
4641 <li><a href="#index-sh_002c-option-226">sh, option</a>: <a href="#Chess-engine-options">Chess engine options</a></li>
4642 <li><a href="#index-Shortcut-keys-182">Shortcut keys</a>: <a href="#Keys">Keys</a></li>
4643 <li><a href="#index-Show-Coords_002c-Menu-Item-113">Show Coords, Menu Item</a>: <a href="#Options-Menu">Options Menu</a></li>
4644 <li><a href="#index-Show-Engine-Output_002c-Menu-Item-45">Show Engine Output, Menu Item</a>: <a href="#View-Menu">View Menu</a></li>
4645 <li><a href="#index-Show-Evaluation-Graph_002c-Menu-Item-47">Show Evaluation Graph, Menu Item</a>: <a href="#View-Menu">View Menu</a></li>
4646 <li><a href="#index-Show-Game-List_002c-Menu-Item-48">Show Game List, Menu Item</a>: <a href="#View-Menu">View Menu</a></li>
4647 <li><a href="#index-Show-Last-Move_002c-Shortcut-Key-183">Show Last Move, Shortcut Key</a>: <a href="#Keys">Keys</a></li>
4648 <li><a href="#index-Show-Move-History_002c-Menu-Item-46">Show Move History, Menu Item</a>: <a href="#View-Menu">View Menu</a></li>
4649 <li><a href="#index-Show-Target-Squares_002c-Menu-Item-114">Show Target Squares, Menu Item</a>: <a href="#Options-Menu">Options Menu</a></li>
4650 <li><a href="#index-showButtonBar_002c-option-455">showButtonBar, option</a>: <a href="#User-interface-options">User interface options</a></li>
4651 <li><a href="#index-showCoords_002c-option-445">showCoords, option</a>: <a href="#User-interface-options">User interface options</a></li>
4652 <li><a href="#index-showEvalInMoveHistory_002c-option-475">showEvalInMoveHistory, option</a>: <a href="#User-interface-options">User interface options</a></li>
4653 <li><a href="#index-showTargetSquares_002c-option-460">showTargetSquares, option</a>: <a href="#User-interface-options">User interface options</a></li>
4654 <li><a href="#index-showThinking_002c-option-210">showThinking, option</a>: <a href="#Chess-engine-options">Chess engine options</a></li>
4655 <li><a href="#index-shuffleOpenings_002c-option-250">shuffleOpenings, option</a>: <a href="#Chess-engine-options">Chess engine options</a></li>
4656 <li><a href="#index-size_002c-option-440">size, option</a>: <a href="#User-interface-options">User interface options</a></li>
4657 <li><a href="#index-sn_002c-option-278">sn, option</a>: <a href="#UCI-_002b-WB-Engine-Settings">UCI + WB Engine Settings</a></li>
4658 <li><a href="#index-sNoOwnBookUCI_002c-option-267">sNoOwnBookUCI, option</a>: <a href="#UCI-_002b-WB-Engine-Settings">UCI + WB Engine Settings</a></li>
4659 <li><a href="#index-Sound-Options_002c-Menu-Item-173">Sound Options, Menu Item</a>: <a href="#Options-Menu">Options Menu</a></li>
4660 <li><a href="#index-soundChallenge_002c-option-379">soundChallenge, option</a>: <a href="#ICS-options">ICS options</a></li>
4661 <li><a href="#index-soundChannel_002c-option-375">soundChannel, option</a>: <a href="#ICS-options">ICS options</a></li>
4662 <li><a href="#index-soundChannel1_002c-option-376">soundChannel1, option</a>: <a href="#ICS-options">ICS options</a></li>
4663 <li><a href="#index-soundCShout_002c-option-374">soundCShout, option</a>: <a href="#ICS-options">ICS options</a></li>
4664 <li><a href="#index-soundDirectory_002c-option-370">soundDirectory, option</a>: <a href="#ICS-options">ICS options</a></li>
4665 <li><a href="#index-soundIcsAlarm_002c-option-383">soundIcsAlarm, option</a>: <a href="#ICS-options">ICS options</a></li>
4666 <li><a href="#index-soundIcsDraw_002c-option-386">soundIcsDraw, option</a>: <a href="#ICS-options">ICS options</a></li>
4667 <li><a href="#index-soundIcsLoss_002c-option-385">soundIcsLoss, option</a>: <a href="#ICS-options">ICS options</a></li>
4668 <li><a href="#index-soundIcsUnfinished_002c-option-387">soundIcsUnfinished, option</a>: <a href="#ICS-options">ICS options</a></li>
4669 <li><a href="#index-soundIcsWin_002c-option-384">soundIcsWin, option</a>: <a href="#ICS-options">ICS options</a></li>
4670 <li><a href="#index-soundKibitz_002c-option-377">soundKibitz, option</a>: <a href="#ICS-options">ICS options</a></li>
4671 <li><a href="#index-soundMove_002c-option-382">soundMove, option</a>: <a href="#ICS-options">ICS options</a></li>
4672 <li><a href="#index-soundProgram_002c-option-368">soundProgram, option</a>: <a href="#ICS-options">ICS options</a></li>
4673 <li><a href="#index-soundRequest_002c-option-380">soundRequest, option</a>: <a href="#ICS-options">ICS options</a></li>
4674 <li><a href="#index-Sounds-369">Sounds</a>: <a href="#ICS-options">ICS options</a></li>
4675 <li><a href="#index-soundSeek_002c-option-381">soundSeek, option</a>: <a href="#ICS-options">ICS options</a></li>
4676 <li><a href="#index-soundShout_002c-option-372">soundShout, option</a>: <a href="#ICS-options">ICS options</a></li>
4677 <li><a href="#index-soundSShout_002c-option-373">soundSShout, option</a>: <a href="#ICS-options">ICS options</a></li>
4678 <li><a href="#index-soundTell_002c-option-378">soundTell, option</a>: <a href="#ICS-options">ICS options</a></li>
4679 <li><a href="#index-spf_002c-option-404">spf, option</a>: <a href="#Load-and-Save-options">Load and Save options</a></li>
4680 <li><a href="#index-sSAN_002c-option-474">sSAN, option</a>: <a href="#User-interface-options">User interface options</a></li>
4681 <li><a href="#index-st_002c-option-200">st, option</a>: <a href="#Chess-engine-options">Chess engine options</a></li>
4682 <li><a href="#index-Stop-Examining_002c-Menu-Item-76">Stop Examining, Menu Item</a>: <a href="#Action-Menu">Action Menu</a></li>
4683 <li><a href="#index-Stop-Observing_002c-Menu-Item-75">Stop Observing, Menu Item</a>: <a href="#Action-Menu">Action Menu</a></li>
4684 <li><a href="#index-sUCCI_002c-option-258">sUCCI, option</a>: <a href="#UCI-_002b-WB-Engine-Settings">UCI + WB Engine Settings</a></li>
4685 <li><a href="#index-sUCI_002c-option-254">sUCI, option</a>: <a href="#UCI-_002b-WB-Engine-Settings">UCI + WB Engine Settings</a></li>
4686 <li><a href="#index-sUSI_002c-option-260">sUSI, option</a>: <a href="#UCI-_002b-WB-Engine-Settings">UCI + WB Engine Settings</a></li>
4687 <li><a href="#index-sweepPromotion_002c-option-437">sweepPromotion, option</a>: <a href="#User-interface-options">User interface options</a></li>
4688 <li><a href="#index-Sync-after-cycle_002c-Menu-Item-146">Sync after cycle, Menu Item</a>: <a href="#Options-Menu">Options Menu</a></li>
4689 <li><a href="#index-Sync-after-round_002c-Menu-Item-145">Sync after round, Menu Item</a>: <a href="#Options-Menu">Options Menu</a></li>
4690 <li><a href="#index-syncAfterCycle_002c-option-300">syncAfterCycle, option</a>: <a href="#Tournament-options">Tournament options</a></li>
4691 <li><a href="#index-syncAfterRound_002c-option-299">syncAfterRound, option</a>: <a href="#Tournament-options">Tournament options</a></li>
4692 <li><a href="#index-Tags_002c-Menu-Item-49">Tags, Menu Item</a>: <a href="#View-Menu">View Menu</a></li>
4693 <li><a href="#index-tc_002c-option-192">tc, option</a>: <a href="#Chess-engine-options">Chess engine options</a></li>
4694 <li><a href="#index-td_002c-option-394">td, option</a>: <a href="#Load-and-Save-options">Load and Save options</a></li>
4695 <li><a href="#index-telnet_002c-option-312">telnet, option</a>: <a href="#ICS-options">ICS options</a></li>
4696 <li><a href="#index-telnetProgram_002c-option-314">telnetProgram, option</a>: <a href="#ICS-options">ICS options</a></li>
4697 <li><a href="#index-Test-Legality_002c-Menu-Item-115">Test Legality, Menu Item</a>: <a href="#Options-Menu">Options Menu</a></li>
4698 <li><a href="#index-testClaims_002c-option-516">testClaims, option</a>: <a href="#Adjudication-Options">Adjudication Options</a></li>
4699 <li><a href="#index-testLegality_002c-option-439">testLegality, option</a>: <a href="#User-interface-options">User interface options</a></li>
4700 <li><a href="#index-tf_002c-option-287">tf, option</a>: <a href="#Tournament-options">Tournament options</a></li>
4701 <li><a href="#index-thinking_002c-option-209">thinking, option</a>: <a href="#Chess-engine-options">Chess engine options</a></li>
4702 <li><a href="#index-Time-Control_002c-Menu-Item-120">Time Control, Menu Item</a>: <a href="#Options-Menu">Options Menu</a></li>
4703 <li><a href="#index-timeControl_002c-option-193">timeControl, option</a>: <a href="#Chess-engine-options">Chess engine options</a></li>
4704 <li><a href="#index-timeDelay_002c-option-395">timeDelay, option</a>: <a href="#Load-and-Save-options">Load and Save options</a></li>
4705 <li><a href="#index-timeIncrement_002c-option-197">timeIncrement, option</a>: <a href="#Chess-engine-options">Chess engine options</a></li>
4706 <li><a href="#index-timeOddsMode_002c-option-208">timeOddsMode, option</a>: <a href="#Chess-engine-options">Chess engine options</a></li>
4707 <li><a href="#index-title_002c-option-452">title, option</a>: <a href="#User-interface-options">User interface options</a></li>
4708 <li><a href="#index-titleInWindow_002c-option-453">titleInWindow, option</a>: <a href="#User-interface-options">User interface options</a></li>
4709 <li><a href="#index-Tournament-file_002c-Menu-item-144">Tournament file, Menu item</a>: <a href="#Options-Menu">Options Menu</a></li>
4710 <li><a href="#index-Tournament-Options-283">Tournament Options</a>: <a href="#Tournament-options">Tournament options</a></li>
4711 <li><a href="#index-Tourney-participants_002c-Menu-Item-148">Tourney participants, Menu Item</a>: <a href="#Options-Menu">Options Menu</a></li>
4712 <li><a href="#index-Tourney-type_002c-Menu-Item-149">Tourney type, Menu Item</a>: <a href="#Options-Menu">Options Menu</a></li>
4713 <li><a href="#index-tourneyCycles_002c-option-292">tourneyCycles, option</a>: <a href="#Tournament-options">Tournament options</a></li>
4714 <li><a href="#index-tourneyFile_002c-option-288">tourneyFile, option</a>: <a href="#Tournament-options">Tournament options</a></li>
4715 <li><a href="#index-tourneyType_002c-option-290">tourneyType, option</a>: <a href="#Tournament-options">Tournament options</a></li>
4716 <li><a href="#index-Training_002c-Menu-Item-62">Training, Menu Item</a>: <a href="#Mode-Menu">Mode Menu</a></li>
4717 <li><a href="#index-trivialDraws_002c-option-518">trivialDraws, option</a>: <a href="#Adjudication-Options">Adjudication Options</a></li>
4718 <li><a href="#index-Truncate-Game_002c-Menu-Item-33">Truncate Game, Menu Item</a>: <a href="#Edit-Menu">Edit Menu</a></li>
4719 <li><a href="#index-tt_002c-option-289">tt, option</a>: <a href="#Tournament-options">Tournament options</a></li>
4720 <li><a href="#index-Two-Machines_002c-Menu-Item-58">Two Machines, Menu Item</a>: <a href="#Mode-Menu">Mode Menu</a></li>
4721 <li><a href="#index-Upgrade-Engine_002c-Menu-Item-160">Upgrade Engine, Menu Item</a>: <a href="#Options-Menu">Options Menu</a></li>
4722 <li><a href="#index-Upload-to-Examine_002c-Menu-Item-77">Upload to Examine, Menu Item</a>: <a href="#Action-Menu">Action Menu</a></li>
4723 <li><a href="#index-useBoardTexture_002c-option-495">useBoardTexture, option</a>: <a href="#User-interface-options">User interface options</a></li>
4724 <li><a href="#index-usePolyglotBook_002c-option-264">usePolyglotBook, option</a>: <a href="#UCI-_002b-WB-Engine-Settings">UCI + WB Engine Settings</a></li>
4725 <li><a href="#index-User-interface-options-418">User interface options</a>: <a href="#User-interface-options">User interface options</a></li>
4726 <li><a href="#index-userName_002c-option-542">userName, option</a>: <a href="#Other-options">Other options</a></li>
4727 <li><a href="#index-useTelnet_002c-option-313">useTelnet, option</a>: <a href="#ICS-options">ICS options</a></li>
4728 <li><a href="#index-uxiAdapter_002c-option-262">uxiAdapter, option</a>: <a href="#UCI-_002b-WB-Engine-Settings">UCI + WB Engine Settings</a></li>
4729 <li><a href="#index-variant_002c-option-525">variant, option</a>: <a href="#Other-options">Other options</a></li>
4730 <li><a href="#index-variations_002c-option-509">variations, option</a>: <a href="#User-interface-options">User interface options</a></li>
4731 <li><a href="#index-vars_002c-ICS-command-561">vars, ICS command</a>: <a href="#Chess-Servers">Chess Servers</a></li>
4732 <li><a href="#index-View-Menu-43">View Menu</a>: <a href="#View-Menu">View Menu</a></li>
4733 <li><a href="#index-whitePieceColor_002c-option-488">whitePieceColor, option</a>: <a href="#User-interface-options">User interface options</a></li>
4734 <li><a href="#index-who_002c-ICS-command-553">who, ICS command</a>: <a href="#Chess-Servers">Chess Servers</a></li>
4735 <li><a href="#index-xflash_002c-option-464">xflash, option</a>: <a href="#User-interface-options">User interface options</a></li>
4736 <li><a href="#index-year_002c-Menu-Item-165">year, Menu Item</a>: <a href="#Options-Menu">Options Menu</a></li>
4737 <li><a href="#index-Zoom-factor-in-Evaluation-Graph_002c-Menu-Item-119">Zoom factor in Evaluation Graph, Menu Item</a>: <a href="#Options-Menu">Options Menu</a></li>
4739 <div class="contents">
4740 <h2>Table of Contents</h2>
4742 <li><a name="toc_Top" href="#Top">Introduction</a>
4743 <li><a name="toc_Major-modes" href="#Major-modes">1 Major modes</a>
4744 <li><a name="toc_Basic-operation" href="#Basic-operation">2 Basic operation</a>
4745 <li><a name="toc_Menus" href="#Menus">3 Menus, buttons, and keys</a>
4747 <li><a href="#File-Menu">3.1 File Menu</a>
4748 <li><a href="#Edit-Menu">3.2 Edit Menu</a>
4749 <li><a href="#View-Menu">3.3 View Menu</a>
4750 <li><a href="#Mode-Menu">3.4 Mode Menu</a>
4751 <li><a href="#Action-Menu">3.5 Action Menu</a>
4752 <li><a href="#Engine-Menu">3.6 Engine Menu</a>
4753 <li><a href="#Options-Menu">3.7 Options Menu</a>
4754 <li><a href="#Help-Menu">3.8 Help Menu</a>
4755 <li><a href="#Keys">3.9 Other Shortcut Keys</a>
4757 <li><a name="toc_Options" href="#Options">4 Options</a>
4759 <li><a href="#Chess-engine-options">4.1 Chess Engine Options</a>
4760 <li><a href="#UCI-_002b-WB-Engine-Settings">4.2 UCI + WB Engine Settings</a>
4761 <li><a href="#Tournament-options">4.3 Tournament options</a>
4762 <li><a href="#ICS-options">4.4 ICS options</a>
4763 <li><a href="#Load-and-Save-options">4.5 Load and Save options</a>
4764 <li><a href="#User-interface-options">4.6 User interface options</a>
4765 <li><a href="#Adjudication-Options">4.7 Adjudication Options</a>
4766 <li><a href="#Other-options">4.8 Other options</a>
4768 <li><a name="toc_Chess-Servers" href="#Chess-Servers">5 Chess Servers</a>
4769 <li><a name="toc_Firewalls" href="#Firewalls">6 Firewalls</a>
4770 <li><a name="toc_Environment" href="#Environment">7 Environment variables</a>
4771 <li><a name="toc_Limitations" href="#Limitations">8 Limitations and known bugs</a>
4772 <li><a name="toc_Problems" href="#Problems">9 Reporting problems</a>
4773 <li><a name="toc_Contributors" href="#Contributors">10 Authors and contributors</a>
4774 <li><a name="toc_CMail" href="#CMail">11 CMail</a>
4776 <li><a href="#CMail-options">11.1 CMail options</a>
4777 <li><a href="#CMail-game">11.2 Starting a CMail Game</a>
4778 <li><a href="#CMail-answer">11.3 Answering a Move</a>
4779 <li><a href="#CMail-multi">11.4 Multi-Game Messages</a>
4780 <li><a href="#CMail-completion">11.5 Completing a Game</a>
4781 <li><a href="#CMail-trouble">11.6 Known CMail Problems</a>
4783 <li><a name="toc_Other-programs" href="#Other-programs">12 Other programs you can use with XBoard</a>
4785 <li><a href="#GNU-Chess">12.1 GNU Chess</a>
4786 <li><a href="#Fairy_002dMax">12.2 Fairy-Max</a>
4787 <li><a href="#HoiChess">12.3 HoiChess</a>
4788 <li><a href="#Crafty">12.4 Crafty</a>
4789 <li><a href="#zic2xpm">12.5 zic2xpm</a>
4791 <li><a name="toc_Copyright" href="#Copyright">Copyright</a>
4792 <li><a name="toc_Copying" href="#Copying">GNU GENERAL PUBLIC LICENSE</a>
4793 <li><a name="toc_Index" href="#Index">Index</a>
projects / xboard.git / blob