AFK

Syntax: afk [message]

AFK toggles away from keyboard mode. When your afk is on, a player who
TELEPATHs to you or tries to LINK you will be warned that you are away
from your keyboard. People telepathing you will also see any message you
may have entered.

To change your afk message, simply type: afk <new message> and it will
update.

To turn afk off, simply type: afk

See also:  COMMUNICATION RULES IDLE