=item B<-ec>
-This is an alias for -pg "EngineCommand=<value>".
+This is an alias for -pg "EngineCommand=<value>"
=item B<-ed>
-This is an alias for -pg "EngineDir=<value>".
+This is an alias for -pg "EngineDir=<value>"
=item B<-en>
This is an alias for -pg "EngineName=<value>"
-=item B<-hash>
+=item B<-log> (default: false)
-This is an alias for -uci "Hash=<value>".
-
-=item B<-log>
-
-This is an alias for -pg "Log=true".
+This is an alias for -pg "Log=<value>"
=item B<-lf> (default: "polyglot.log")
This is an alias for -pg "LogFile=<value>".
-=item B<-bk>
+=item B<-wb> (default: "true")
-This is an alias for -pg "Book=true" -pg "BookFile=<value>".
+This is an alias for -pg "OnlyWbOptions=<value>".
=back
command-line arguments. Path searching is used and the current
directory will be "EngineDir".
+=item B<SettingsDir> (default: $HOME/.polyglot on Linux; ".\_PG" on Windows)
+
+The directory where ini files are stored for engines that are started with
+-noini. Such ini files may be created by pushing the "Save" button in the
+Engine settings dialog in WB/XB 4.4.0 and higher. As a special exception
+(for WB/XB 4.4.0 compatibility) this directory is also used in case
+PolyGlot is started with config files named "polyglot_1st.ini" or
+"polyglot_2nd.ini".
+
=item B<Log> (default: false)
Whether PolyGlot should log all transactions with the interface and
Select moves according to their weights in the book. If false the move
with the highest weight is selected.
-=item B<BookRandom> (default: true)
+=item B<BookLearn> (default: false)
-Select moves according to their weights in the book. If false the move
-with the highest weight is selected.
+Store learning information in the book (which must be writable). Currently
+no engine actually uses this information.
=item B<BookDepth> (default: 256)
This a bit vector in which each bit represents the processors that a
process is allowed to run on. This option works only on Windows.
-=item B<Persist> (default: true)
-
-If true then PolyGlot will implement persistence by loading
-options from an additional INI file which is specified by the option
-"PersistFile". At exit PolyGlot will also save its options to this INI
-file.
+=item B<OnlyWbOptions> (default: true)
-=item B<PersistFile> (default: PG_<EngineName>.ini)
-
-The name of the file from which to take the additional options.
-You can safely edit this file, or delete it to restore the default
-options.
+If true then PolyGlot restricts the options it sends to those that
+are potentially useful for WinBoard.
=back
When RepeatPV is false PolyGlot does not repeat the last pv string.
Due to the way kibitzing is implemented, KibitzMove is disabled in that case.
-=item B<WbWorkArounds> (default: true)
-
-The intention of these options is to provide work arounds for
-xboard/winboard bugs should they arise. This one decapitalizes
-the word Draw in options that contain this word. Some versions of
-xboard/winboard contain a bug which causes such options to be
-interpreted as draw claims by the engine.
-
-Engines that send options with "Draw" in their name are Rybka and HIARCS.
-
-=item B<WbWorkArounds2> (default: false)
-
-Old version of Winboard clear the engine output window at depth 1. With this
-work around PG will send info lines at depth >=2. This may or may not improve
-the display.
-
=back
=head1 EXAMPLES
+Running the UCI engine "fruit" under xboard 4.3.15 and later (this invokes PolyGlot internally).
+
+ xboard -fcp fruit -fUCI
+
+An explicit command line for using the UCI engine "fruit" with 128M hash in xboard with logging enabled (this also works on xboard 4.2.7).
+
+ xboard -fcp "polyglot -noini -log -ec fruit -hash 128"
+
+The equivalent config file would be:
+
+ [PolyGlot]
+ EngineCommand = fruit
+ Log = true
+ [Engine]
+ Hash=128
+
Compile "games.pgn" into a book "book.bin" retaining all lines of at
most 30 plies.
polyglot epd-test -epd test.epd -max-time 420
-The command line for using the UCI engine "fruit" with 128M hash in xboard with logging enabled.
-
- xboard -fcp "polyglot -noini -log -ec fruit -hash 128"
-
-The equivalent config file would be:
-
- [PolyGlot]
- EngineCommand = fruit
- Log = true
- [Engine]
- Hash=128
-
=head1 EXIT STATUS
PolyGlot always returns 0 on exit.
Various enhancements: Fonzy Bleumers<match(at)geenvis.net>
-UCI port: Michel Van den Bergh <michel.vandenbergh(at)uhasselt.be>
+UCI port and implementation of new WB protocol: Michel Van den Bergh
+<michel.vandenbergh(at)uhasselt.be>
+
+
=head1 SEE ALSO