Arrow keys to move. W and S to zoom in and out.
For this project, I just decided to remix a off-edge line drawing project by DadOfMrLog. The main feature is that even if the drawing goes off the screen, it still appears normally. The part I don't understand is how it determines where the points intersect and such (that would be great to know) - but either way, they're in custom blocks so I can easily use them in other projects.
