Ok, I prepped a single dollar bill and ran it by my sharp eyed spouse (who burns me all the time
with her keen observation) and she didn't notice a thing. Very easy to use and has a lot of creative
possibilities beyond the excellent presentation in the online tutorial. I'd been experimenting with
bill modifications and probably would have gotten around to something like this eventually. I will
probably use this to modify serial numbers as well. One of my favorite Penguin purchases so far.