Description

   The NCS$RESTORE_CS routine, used in conjunction with the
   NCS$SAVE_CS routine, permits the application program to keep a
   local copy of the collating sequence. The NCS$SAVE_CS routine
   obtains the length and location of the collating sequence and
   returns it to the application program. The application program
   subsequently provides this information to the NCS$RESTORE_CS
   routine, which uses it to access the collating sequence.

   This routine also does some integrity checking on the collating
   sequence as it is being processed.