The NCS$RESTORE_CF routine, used in conjunction with the NCS$SAVE_CF routine, permits the application program to keep a local copy of the conversion function. The NCS$SAVE_CF routine obtains the length and location of the conversion function and returns it to the application program. The application program subsequently provides this information to the NCS$RESTORE_CF routine, which uses it to access the conversion function. This routine also does some integrity checking on the conversion function as it is being processed.