Description

   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.