Simply press either the 1, 2, 3, 4, 5, 6, or 7 key on your keyboard and it will start drawing a design. Press another number and it will start drawing a new design. You can also press the space bar to switch between a white background and a black one. If pressing keys doesn't work, try clicking on the animation and pressing it again.
I was bored one day and wanted to make something cool, so here's what I came up with. P.S. Designs 2, 4, and 7 are my favorites.
