<li>No longer fatal if second engine does not support current variant (just refuse Two Machines mode)</li>
<li>Scroll XBoard game list to keep selected item in view (XB)</li>
<li>Put title on same line as menu bar only for -size 72 and larger (with -titleInWindow, XB)</li>
+ <li>Properly open and close debug file when switching debug mode through key binding Ctrl-D (XB)</li>
</ul>
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