In whatever forum script they're running? Because I have to admit, as someone with quite a few add ons in use on my XenForo forum, it can be tricky to know whether certain minor settings and features are things included by the dev team out of the box or added by a plugin I'd installed in the past. Same sometimes goes with themes, style variables, phrases, etc. It can sometimes be tricky to know what's default and what isn't, and what adds each thing to the site. Anyone else feel the same way?