BIG PIXEL library

This is a BIG PIXEL library -- an example of a project that allows the user to draw things at the "PIXEL" level but zoom in and out to change the pixel size. Try...
 
(h)elp
(c)lear
(space) for a grid
(a/q) for smaller/bigger pixels
(left/right/forward) for movement
(down) fill
(o/p) for a picture