window_copy(_c)

	status.i4.v = window_copy(window_id_1.i2.r, window_id_2.i2.r)

	status.i4.v = window_copy_c(window_id_1.i2.v, window_id_2.i2.v)

	This routine copies the interior of the window indicated by
	"window_id_1" to the window indicated by "window_id_2".

	window_id_1	source window ID
	window_id_2	destination window ID

	This function returns ACNET status values as follows:

	OK			success
	CBS_NO_WINDOW		requested window(s) does not exist
	CBS_MEMFAIL		failed in allocating dynamic memory

	This function requires the following include files:

	cbslib_h, acnet_errors_h

	Related functions:

	window_text_block(_c), window_tvmx(_c), intro_tv_windows

	C/C++ usage:

	short	window_id_1;
	short	window_id_2;
	int	status;

	status = window_copy_c(window_id_1,window_id_2);