NOTIFY %|[-away] <mask> [<ircnets>]

     -away: Notifies about away-status changes
     -list: Lists the notify list entries with all their settings   
            <mask>: Either a simple "nick" or "nick!*@*blah.org". 
            The nick can't contain wildcards, but the user/host can.
        
/NOTIFY without any arguments displays if the people in notify list are online or offline.

See also: UNNOTIFY, SET NOTIFY