No german talking there, /kick nickname if they talk in german.. (BEFORE THAT, TELL THEM TO PM U IF U KNOW GERMAN)
Same rules of the forum and game.
/clear Delete the messages from the Chatbox
/cls Same as the '/clear' command
/ban Ban a member from the Chatbox. This command must be followed by the username to ban. (ex: /ban username). Once the user is banned, he won't see neither have access to the Chatbox.
/unban To unban a user from the Chatbox. Its use is identical to ban (ex: /unban nickname)
/kick Disconnect a member from the Chatbox. The command must be followed by the username to disconnect (ex: /kick username). Disconnecting a user won't prevent him from reconnecting.
/exit Disconnect from the Chatbox. You can also precise the reason that will be visible for all members connected (ex: /exit reason)
/abs Send a message noticing that you're absent. You can add a reason that will be displayed in the message and visible by all members connected to the Chatbox (ex: /abs reason)