old_restore.i4.v = window_restore_hint_c([restore_mode.i4.v])

	This routine allows the application programmer to request a
	restore mode for windows created by a library routine.  This
	request is subject to the needs of the library routines themselves.
	Therefore, some routines may honor this while others may not.

	[restore_mode]	window restore mode  (If this argument is not
			supplied, the routine will return the present
			restore mode only.)
			(CLIB_DEFAULT_ARG -> simply return the present
					     restore mode,
			 WMNGR_REPAINT -> repaint underlying windows,
			 WMNGR_RESTORE_BACKGROUND -> repaint obscured text

	This function returns status values as follows:

	CBS_INVARG		invalid window restore mode was specified
	CBS_MEMFAIL		dynamic memory allocation failure
	otherwise		previous restore mode

	This function requires the following include files:

	cbslib_h, acnet_errors_h

	Related functions:

	window_construct(_c), window_create(_c), window_delete(_c),

	C/C++ usage:

	short	window_id;
	int	old_restore;
	int	restore_mode = WMNGR_REPAINT;

	old_restore = window_restore_hint_c(restore_mode);