If no time is given, the timeout is disabled.
By default the timeout is disabled.
+
+ --blackout[=time]
+ Setting a blackout time will cause the display to become black if the mouse is not moved and no keys or buttons are pressed.
+ If no time is given, the blackout time is disabled.
+
+ By default the blackout is disabled.
+
+ This switch was introduced for entirely obscure purposes.
--classical
If this option is used, the game will treat pieces "classically", ie: as in standard chess.