Starts a new game (and abandons the current, if any.)
Shows you positions of the balls.
Checks whether all balls are placed. If yes, it terminates the current game, computes the final score and indicates real positions of the balls. The middle mouse button has the same function.
Resizes the main window, so that it fits perfectly its contents. This is useful, when you accidentaly change the size of the window...
Quit's KBlackbox