One comment on your Cheat Sheet. It would be nice if you did something in addition to making the titles Bold to make them stand out. Maybe Underline too.
Can't do that, since I want it to be plain ASCII. That's also why there are no borders around the sections, and why I didn't just use a table to format the thing.
Besides, bold characters are wider in most fonts, so it'd ruin the lay-out. Underline would be possible, but still the ASCII thing holds.
If this ever becomes a perldoc, markup like this is not possible at all, since in POD you can't have fixed formatting and markup at the same time.
- firstname.lastname@example.org (do not use).