! 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: WINDOW SWAP <r>  
  Swaps the current window with the hidden window with refnum <r>.  
  The proportions of the window are maintained.