Synopsis:
   window [refnum] swap <hidden refnum>

Description:
   This swaps the current window with the specified hidden window.  The
   proportions of the current window are maintained.  This command only
   works with hidden windows.

See Also:
   bind(4) swap_last_window, swap_next_window, swap_previous_window;
   window(4) back, goto, next, previous, refnum

