@andybaio All my old cartoons were drawn on parchment stock with India ink, but I used blue pencil to draft them, so the blue lines can be seen on the originals (supposedly, blue lines didn't reproduce when you made photo negatives, but this goes back to 1980, so that was before Calvin and Hobbes). Nowadays, a basic PC Paint program creates a great finished product, so all the drawing and erasing is electronic...