GTELL ; SAY TELL REPLY

GTELL ; SAY ' TELL REPLY
Syntax: gtell <message>
        say   <message>
        tell  <character> <message>

All of these commands send messages to other players.  GTELL sends a message
to all of the characters in your group, wherever they are, even if they are
sleeping or stunned or dying.  ';' is a synonym for GTELL.

SAY sends a message to all awake players in your room.  The single quote '''
is a synonym for SAY.

TELL sends a message to one awake player anywhere in the world.

REPLY sends a message to the last player who sent you a TELL.  REPLY will
work even if you can't see the player, and without revealing their identity.
This is handy for talking to invisible or switched immortal players.