This is a drawing recorder. It can record your drawings! You can save them and then later load them. Controls: "N" for new drawing. "Space" for redrawing your drawing. Keys 0-9 to switch color. "S" to save. "L" to load. "H" for help.
The thumbnail was made by @cloverfly. The save code for it is in the project, in the "save code for thumbnail" list