@rpgmaker: Mono might need some handholding to override, I honestly can't recall (not something I tested thoroughly, given its basically non-existent usage).
If I did test it, it was probably with a txt file, not a book.
On the other hand, I put the menu in there, so it *must* have worked at one point ;D.
Does the "show current" button track your current override for the mono family?
Are you *sure* it's the mono family that's used? Because, as I mentioned, it's somewhat hard to actually get a book to use mono...
@knc1: AFAIK, yes, at least on x86 builds.
@feelmaroon: Not really, that hasn't been an issue for me since the PW2. I even started switching to full serifs

. I know some people used to tweak fonts in the good old days, so, try looking into that.