window_is_in_scroll_buffer_c

	status.i4.v = window_is_in_scroll_buffer_c(window_id.i2.v, row.i4.v)

	This routine allows the programmer to determine if a given row
	is located within a window's scroll buffer.

	window_id	ID of desired window
	row		window row number

	This function returns status values as follows:

	CBS_INVARG		invalid window ID
	CBS_NO_WINDOW		window doesn't exist
	TRUE			row is in the window's scroll buffer
	FALSE			row is outside of the window's scroll buffer

	This function requires the following include files:

	cbslib_h, acnet_errors_h

	Related functions:

	window_next_scroll_row_c, window_row_to_entry_c,
	window_entry_to_row_c, window_current_row_c, window_scroll(_c),
	window_physical_column_c, window_virtual_column_c, window_hscroll_c

	C/C++ usage:

	short	window_id;
	int	status;
	int	row = 2;

	status = window_is_in_scroll_buffer_c(window_id,row);