A colorful symmetry pen project. Use the slider at the bottom to change the number of ways the screen gets split for the symmetry. Click and hold to draw, stop holding to stop drawing. Press space to hide the variables and buttons if they get in the way of your drawing. Press space again to show them. Click the icon in the bottom right to switch from the pen to an eraser. If you don't want to draw while you click, you can use the up arrow instead.
