! Copyright (c) 1990-1997  Michael Sandrof, Troy Rollo, Matthew Green,
! and other ircII contributors.
!
! All rights reserved.  See the HELP IRCII COPYRIGHT file for more
! information.
!
Usage: ON [#|+|-|^|&|@]JOIN [-|^]<parameters> [action]
  This is activated whenever someone joins a channel you are on.  
  The parameters for the action are as follows:
    $0    nickname of person who joined the channel
    $1    the channel which was joined
