To draw, hold mouse. To make a straight line, press z at the first point, then go to the second point and click. To make a square, press a at the desired spot. A size in pixels will be asked for, 100 is small, 200 is medium, and 300+ is large. You can tweak these values if you'd like. To add a custom color, press c and type in your RGB value. Each value is split via space or comma. Press up arrow to save into a list, space to reload the list (make sure to save otherwise all data will be lost!), enter to erase all, down arrow to change the resolution (default is 5; going less than 1 will lake a very long time and drawing will break due to list limits.), right and left arrow to change size. Number keys 1-6 will switch between the pre-made values. That's it! Report bugs in the comments.zz
This article helped add the RGB pen color: scratch.mit.edu/discuss/topic/353495/?#post-3572633 Thanks to griffpatch for the idea, I made the code, but he gave me the idea. (and the resolution code) Other than that, I made this game alone.