This is the Animation Window. With this you can control the card moving speeds. To get this window click on the animation link under the customize menu. This window has four scrollbars. First one is Card moving speed control. With this scrollbar you can control the speed of the card when it is in normal move. Second scrollbar is Undo/Redo Speed. This speed is applicable when you do a undo or redo operation.
Third scrollbar is for undo all and redo all speed. When an Undo all or redo all is executed cards will move with a speed specified here. Fourth one is for replay. This speed is applicable for replay forward, backward and replay all moves. This speed is applicable for completed games too i.e. when you open a finished game, engine play cards according to the setting specified here.