press the space bar to clear everything(only when the protect is stopped), press right arrow to decrease the size of the ball, press left arrow to increase the size, press up arrow to hide sliders+ball, press down arrow to show slider+ball, press "a" key to make the balls point to mouse pointer, press "s" key to make it return to normal. mess around with the sliders. Have fun.
it not work if i press down aroww
