frig_default_menu_c (ul_friglib)

	status.i4.v = frig_default_menu_c(top_row.i4.v, left_column.i4.v,
					  file_name.ch.d [,file_index.i4.r]
					  [,file_type.i4.v])
          
	This routine displays a menu of currently valid defaults file names.
   
	top_row		top row of window (use WMNGR_CENTER for centering
			or WINDOW_xxx_COORD macros in macro for special
			positioning)
	left_column	left column of window (use WMNGR_CENTER for centering
			or WINDOW_xxx_COORD macros in macro for special
			positioning)
	file_name	returned null terminated selected file name
			(15 characters)
	[file_index]	returned file index (currently has little meaning)
			(default is NULL)
	[file_type]	type of houses to choose from
			(FRIG_ALL_HOUSES  -> all houses (default),
			 FRIG_FRIG_HOUSES -> normal refrigerator houses only,
			 FRIG_COMP_HOUSES -> compressor houses only)
   
	This function returns ACNET status values as follows:

	CBS_OK			success
	CBS_ABORT		error from scroll_menu(_c)
	CBS_NO_SUCH		no houses have default files

	This function requires the following include files:

	ul_friglib_h:friguti_h, acnet_errors_h

	Related functions:

	frig_verify_default_c, frig_next_default_c, frig_user_file_menu_c,
	frig_house_menu_c

	C usage:

	char	file_name[15];
	int	status;
	int	top_row = WMNGR_CENTER;
	int	left_column = WMNGR_CENTER;
	int	file_index;
	int	file_type = FRIG_ALL_HOUSES;

	status = frig_default_menu_c(top_row,left_column,file_name,
				     &file_index,file_type);