if you want to stop drawing you have to click and hold the mouse and drag the pencil somewhere else on the paper. when you let go it will start drawing again. press buttons to change the color, opacity, and pen size. buttons: 1=red 2=orange 3=yellow 4=lime 5=green 6=turquoise 7=blue 8=purple 9=pink 0 =brown e=white/erase space=black left arrow= darker right arrow=lighter up arrow= bigger pen size down arrow=smaller pen size