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  Routine:      CBL_NLS_COMPARE
 
  Function:     Compares two strings.
 
  Syntax:       CALL "CBL_NLS_COMPARE" USING        string1
                                                    string2
                                       BY VALUE     string1-length
                                       BY VALUE     string2-length
                                       BY REFERENCE result-byte
                                       RETURNING    status-code
 
  Parameters:   string1                PIC X(n).
                string2                PIC X(n).
                string1-length         PIC X(4) COMP-5.
                string2-length         PIC X(4) COMP-5.
                result-byte            PIC S9 COMP-5.
                status-code            See ◄Key►
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