ADAS Subroutine xxword

      SUBROUTINE XXWORD( CTEXT  , CDELIM , NFIRST ,
     &                   IWORDS ,
     &                   IFIRST , ILAST  , NWORDS
     &                 )
C-----------------------------------------------------------------------
C
C  ****************** FORTRAN77 SUBROUTINE: XXWORD *********************
C
C  PURPOSE: TO EXTRACT THE Nfirst to (Nfirst+IWORDS-1) WORDS FROM AN
C           INPUT STRING. OUTPUTS THE FIRST AND LAST BYTE INDEXES OF
C           EACH WORD AS WELL AS THE TOTAL NUMBER OF WORDS FOUND.
C
C           A WORD = A STRING OF CHARACTERS SEPARATED BY ANY CHARACTER
C                    CONTAINED IN THE INPUT STRING CDELIM.
C
C  CALLING PROGRAM: GENERAL USE
C
C  SUBROUTINE:
C
C  INPUT : (C*(*)) CTEXT   = INPUT TEXT LINE CONTAINING STRING
C  INPUT : (C*(*)) CDELIM  = INPUT STRING CONTAINING DELIMITER CHARS.
C  INPUT : (I*4)   NFIRST  = THE INDEX NO. OF THE FIRST WORD TO EXTRACT.
C
C  I/O   : (I*4)   IWORDS  = INPUT : SIZE OF IFIRST, ILAST(ARRAYS)
C                                    (I.E. NUMBER OF WORDS TO EXTRACT)
C                          = OUTPUT: NUMBER OF REQUESTED WORDS FOUND
C
C  OUTPUT: (I*4)   IFIRST()= INDEX OF FIRST BYTE OF THE Nth WORD
C  OUTPUT: (I*4)   ILAST() = INDEX OF LAST  BYTE OF THE Nth WORD
C  OUTPUT: (I*4)   NWORDS  = THE TOTAL NUMBER OF WORDS FOUND IN CTEXT
C
C          (I*4)   LENTXT  = LENGTH IN BYTES OF 'CTEXT' STRING
C          (I*4)   IDELIM  = 0 => CTEXT CHARACTER IS NOT A DELIMITER
C                          > 0 => CTEXT CHARACTER IS A DELIMITER
C          (I*4)   ITOTAL  = NUMBER OF WORDS FOUND SO FAR
C          (I*4)   IINDEX  = IFIRST()/ILAST() INDEX OF CURRENT WORD
C          (I*4)   NLAST   = THE INDEX NO. OF THE LAST WORD TO EXTRACT
C          (I*4)   I       = GENERAL USE INDEX
C
C          (L*4)   LWORD   = .TRUE.  - PROCESSING AN IDENTIFIED WORD
C                            .FALSE. - PROCESSING SPACE BETWEEN WORDS
C
C ROUTINES: NONE
C
C NOTES:    IF THERE IS NO Nfirst WORD OR NO WORDS ARE FOUND
C           (I.E. INPUT STRING IS BLANK) THEN IWORDS=0
C
C AUTHOR:  PAUL E. BRIDEN (TESSELLA SUPPORT SERVICES PLC)
C          K1/0/37
C          JET EXT. 5023
C
C DATE:    20/05/93
C
C-----------------------------------------------------------------------
      CHARACTER*(*)       CDELIM,      CTEXT
      INTEGER             IFIRST(IWORDS),           ILAST(IWORDS)
      INTEGER             IWORDS,      NFIRST,      NWORDS