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

	This routine deletes all text contained in the associated window's
	scroll buffer.

	window_id	window ID (use WMNGR_BACKGROUND for background window)

	This function returns ACNET status values as follows:

	OK			success
	CBS_INVARG		invalid window ID
	CBS_NO_WINDOW		requested window does not exist
	CBS_MEMFAIL		dynamic memory allocation failure

	This function requires the following include files:

	cbslib_h, acnet_errors_h

	Related functions:

	window_erase_c, window_scroll(_c), window_query_scroll(_c),
	window_total_lines_c, intro_tv_windows

	C/C++ usage:

	short	window_id;
	int	status;

	status = window_delete_scroll_buffer_c(window_id);