To move the pen, hold down the mouse and move it. To change the backdrop color, press the right arrow or the left arrow. When you are done drawing, take a screenshot. The reset button clears your drawing. If you want to keep your pen at one specific point, press the space bar. If you want to make your pen go immediately to the mouse press the up arrow.
I just felt like making a drawing game. To take a screenshot press Ctrl and the Print Screen Sys Rq buttons at the same time, and it will go on your cut copy paste clipboard. Check out Painter 2 at scratch.mit.edu/projects/18294499/
