Use the arrow keys to move your drawing circle Press 1 for red, 2 for orange, 3 for yellow, 4 for green, 5 for light blue, 6 for dark blue, 7 for purple, 8 for pink, 9 for black, and 0 for white Press space to clear press "a" to draw and "s" to pick it up.
You might need to press the flag a few times...
