Choosing this command you make the chess-clock stop, when you aren't playing. See section Pause. for more details.
Take Back Move
Last made move is cancelled, chess-clock stops and the mode "Back Moving" is set. Now it is possible to cancel moves and restore them (repeat). See the section Take Back Move. for more details.
This command makes possible repeat the moves which were cancelled. See the section Take Back Move. for more information.
This command forces the program make a move immediately. See section Force Computer Move for more details.