previous_value.i4.v = waitev_force_abort_window_c(want_window.i4.v)

	This routine determines whether or not the waitev(_c) routine
	creates an abort window.  The default is no abort window.

	want_window	flag indicating whether or not the waitev(_c)
			opens an abort window
			(TRUE -> waitev(_c) will open an abort window,
			 FALSE -> waitev(_c) will not open an abort window

	This function returns values as follows:

	TRUE			abort windows were previously enabled
	FALSE			abort windows were previously disabled

	This function requires the following include files:


	Related functions:

	waitev(_c), wait_for_predicted_event_c

	C/C++ usage:

	int	previous_value;
	int	want_window = FALSE;

	previous_value = waitev_force_abort_window_c(want_window);