So, a 'help rules' style quiz:
How many characters may each player have on batmud? (0, 1, 2, unlimited)
Are players allowed to kill other players? (yes, no, yes but with limits)
What languages are allowed on public channels? (english, finnish+english,
finnish+english+swedish, any)
Are there any restrictions to 'robotting' or 'scripting' (letting a script
grind for you) in batmud? (no limits, scripts must not harm other players, no
robotting is allowed)
Who has the final authority in batmud? (level 95+ mortals, any wizard,
archwizards)

Granted, all those questions/answers for the most part would be a bit easy to
figure out from the wording of the question, but it makes sure that people at
least realize those rules exist before passing lvl 20...especially the
multiple players one seems to be an issue.