Usage: sendtextmessage targetmode={1-3} target={serverID|channelID|clientID} 
        msg={text}

Sends a text message a specified target. The type of the target is determined 
by targetmode while target specifies the ID of the recipient, whether it be a 
virtual server, a channel or a client.

Example:
   sendtextmessage targetmode=2 target=1 msg=Hello\sWorld!
   error id=0 msg=ok