window_read_cursor(_c)

	status.i4.v = window_read_cursor(window_id.i2.r, row.i4.r, column.i4.r)

	status.i4.v = window_read_cursor_c(window_id.i2.v, row.i4.r,
					   column.i4.r)

	This routine returns the current TV cursor position relative
	to the window indicated by "window_id".

	window_id	window ID (use WMNGR_BACKGROUND for background window)
	row, column	returned present cursor position

	This function returns ACNET status values as follows:

	OK			success
	CBS_MEMFAIL		dynamic memory allocation failure
	CBS_NO_WINDOW		requested window does not exist
	CBS_NOT_IN_WINDOW	cursor is not in the requested window
	CBS_WINDOW_OCCLUDED	requested window is occluded at cursor location

	This function requires the following include files:

	cbslib_h, acnet_errors_h

	Related functions:

	window_interrupt_cursor(_c), window_intype, window_intype_again,
	window_set_cursor(_c), intro_tv_windows

	C/C++ usage:

	short	window_id;
	int	status;
	int	row;
	int	column;

	status = window_read_cursor_c(window_id,&row,&column);