*COMDECK SCDCKYDCL
          ITEM SCDCRCENTRYA U(0,0,21);    # WORD ADDRESS OF THE RECORD #
                                          # ENTRY THAT THIS ENTRY      #
                                          # PERTAINS TO                #
          ITEM SCDCKEYTYPE U(0,21,2);     # O = SYMBLOLIC KEY          #
                                          # 1 = SIGNED BINARY          #
                                          # 2 = UNSIGNED BINARY        #
          ITEM SCDCKEYGRPSZ U(0,23,16);   # IF KEY IS A GROUP ITEM     #
                                          # THIS FIELD CONTAINS THE    #
                                          # SIZE OF ONE OCCURRENCE OF  #
                                          # THE GROUP                  #
          ITEM SCDCKEYMAXOC U(0,39,21);   # IF KEY IS A GROUP ITEM THIS#
                                          # FIELD CONTAINS THE MAXIMUM #
                                          # NUMBER OF OCCURRENCES      #
          ITEM SCDCKEYBWP U(0,0,18);      # RELATIVE WORD POISTION OF  #
                                          # THE DATA ITEM IN THE RECORD#
          ITEM SCDCKEYBCP U(0,18,6);      # RELATIVE CHAR POSITION OF  #
                                          # DATA ITEM IN THE RECORD    #
          ITEM SCDCKEYSIZ U(0,24,18);     # SIZE IN CHARACTERS OF THE  #
                                          # SUBJECT ITEM               #
          ITEM SCDCKEYNITM U(0,42,9);     # OFFSET POINTER TO THE NEXT #
                                          # DATA-NAME SPECIFIED FOR THE#
                                          # SUBJECT RECORD             #
          ITEM SCDCKEYCONCT B(0,51,1);    # TRUE - SUBJECT KEY ENTRY IS#
                                          #        A CONCATENATED KEY. #
          ITEM SCDCKEYSORT B(0,52,1);     # TRUE = SUBJECT DATA-NAME   #
                                          #        IS SEQUENTIAL SORT  #
                                          #        KEY(ASCENDING).     #
          ITEM SCDCKEYIMBED B(0,53,1);    # TRUE = FORMAT-1 IS SPECIF- #
                                          #        IED                 #
                                          # FALSE = FORMAT-2 IS SPECIF-#
                                          #         IED                #
          ITEM SCDCKEYPRI B(0,54,1);      # TRUE = SUBJECT DATA-NAME IS#
                                          #        A PRIMARY KEY       #
          ITEM SCDCKEYDUPS B(0,55,1);     # TRUE = DUPLICATES ARE SPEC-#
                                          #        IFIED               #
          ITEM SCDCKEYINDEX B(0,56,1);    # TRUE = INDEXED IS SPECIFIED#
          ITEM SCDCKEYFIRST B(0,57,1);    # TRUE = FIRST IS SPECIFIED  #
          ITEM SCDCKEYNOT B(0,58,1);      # TRUE = NOT IS SPECIFIED    #
          ITEM SCDCKEYDNNXT B(0,0,1);     # TRUE = QUALIFIER ENTRY FOLL#
                                          #        OWS                 #
          ITEM SCDCKEYDNADR U(0,3,21);    # WORD ADDRESS OF THE SPECIFI#
                                          # ED DATA-NAME               #
          ITEM SCDCKEYCLASS U(0,24,6);    # KEY ITEM CLASS             #
                                          # FOR INTERNAL USE ONLY      #
                                          # ZEROED OUT BEFORE WRITING  #
                                          # IT OUT TO THE DIRECTORY    #
          ITEM SCDCKEYDNLEN U(0,15,6);    # LENGTH OF DATA-NAME IN CHAR#
          ITEM SCDCKEYDNPTR U(0,21,9);    # OFFSET POINTER TO THE DATA-#
                                          # NAME ENTRY                 #
          ITEM SCDCKEYRQALL U(0,45,6);    # LENGTH IN CHARACTERS OF THE#
                                          # QUALIFYING NAME            #
          ITEM SCDCKEYRQALP U(0,51,9);    # OFFSET POINTER TO THE QUAL-#
                                          # IFYING NAME                #
          ITEM SCDCKEYDNME C(0,0,10);     # ALTERNATE KEY DATA-NME 1-30#
                                          # CHARACTERS LEFT JUSTIFIED  #
                                          # WITH ZERO FILL             #
          ITEM SCDCKEYQALNM C(0,0,10);    # ALTERNATE KEY QUALIFIER NAM#
                                          # 1-30 CHARACTERS LEFT JUSTIF#
                                          # IED WITH ZERO FILL         #
# FORMAT-3 ----- CONCATENATED KEYS.                                    #
          ITEM SCDCKEYCNITN U(0,31,7); # NUMBER OF ITEMS(DATA-NAMES)   #
                                       # IN CONCATENATED KEY.          #
          ITEM SCDCKEYCNNMW U(0,38,2); # LENGTH IN WORDS OF CONCATEN-  #
                                       # ATED KEY NAME.                #
          ITEM SCDCKEYCNNMC U(0,40,5); # LENGTH IN CHARACTERS OF CON-  #
                                       # CATENATE KEY NAME.            #
          ITEM SCDCKEYCNORD U(0,48,12); # KEY ORDINAL                  # BF 
          ITEM SCDCKEYCNNAM U(0,0,60); # CONCATENATE KEY NAME.         #
          ITEM SCDCKEYCNDNA U(0,0,21); # WORD ADDRESS OF DATA-NAMES    #
                                       # MAKING UP A CONCATENATED KEY  #
                                       # ---- ONE WORD PER DATA-NAME.  #
          ITEM SCDCKEYCNQAL B(0,21,1); # TRUE- SUBJECT DATA-NAME IS    #
                                       #       QUALIFIED.              #
          ITEM SCDCKEYCNDNO U(0,42,18);# SCHEMA ORDINAL OF DATA-NAME.  #
