status.i4.v = window_enable_occluded_ints_c(window_id.i2.v)

	This routine allows the programmer to enable user interrupts
	to be serviced for the requested window when it is occluded.
	Occluded interrupts are disabled when a window is created.

	window_id	window ID (use WMNGR_BACKGROUND for background window)

	This function returns status values as follows:

	CBS_INVARG		invalid window ID was specified
	CBS_NO_WINDOW		window doesn't exist
	CBS_MEMFAIL		dynamic memory allocation failure
	TRUE			occluded interrupts were previously enabled
	FALSE			occluded interrupts were previously disabled

	This function requires the following include files:

	cnsparam_h, cbslib_h, acnet_errors_h

	Related functions:

	window_disable_occluded_ints_c, window_freeze_c, window_unfreeze_c,
	window_enable_restack_c, window_disable_restack_c, intro_tv_windows

	C/C++ usage:

	short	window_id;
	int	status;

	status = window_enable_occluded_ints_c(window_id);