Well, I already started. What does S_SQLNUKE mean, though?
Also, all strings are contained in strings_e.pl for Wakaba and templates.pl for Kareha, for those who want to translate.
Uh, I'd have to check exactly where it's used when I get home and have the source to look at, but there's a nuke function in the admin panel that lets you wipe out the board completely.
S_FIRSTPG and S_LASTPG are the texts shown instead of the Prev and Next buttons when you're at the first or last page. Normally they'd be the same.