!	 $eterna: back,v 1.6 2002/08/29 10:26:14 mrg Exp $
!
! Copyright (c) 1990-2002  Michael Sandrof, Troy Rollo, Matthew Green,
! and other ircII contributors.
!
! All rights reserved.  See the HELP IRCII COPYRIGHT file for more
! information.
!
Usage: WINDOW BACK
  Set the current window to the previous current window
  swapping the current window with the new one if it was
  hidden.