1 Jeremy T Braun sent me a couple of aperture macros that he thought didn't
2 work in gerbv. He was correct.
4 These examples shows that aperture macro primitive 1 is a _filled_ circle
5 (not that all clear from the specication) and that exposure in aperture
6 macros is sort of the equivalent to layers in gerber files.
8 The jpg file is derived from ViewMate and converted from bitmap to jpg
9 with good old trustworthy xv.