*COMDECK SCDCHDDCL
          ITEM SCDCLENG U(0,0,15);        # LENGTH OF DATA CONTROL ENTR#
                                          # IN WORDS                   #
          ITEM SCDCRECCDPTR U(0,15,12);   # OFFSET POINTER TO THE REC  #
                                          # CODE ENTRY.                #
          ITEM SCDCALTRKYPT U(0,27,12);   # OFFSET POINTER TO THE      #
                                          # KEY ENTRY.                 #
          ITEM SCDCNXTAREAP U(0,39,15);   # OFFSET POINTER TO THE NEXT #
                                          # AREA DATA CONTROL ENTRY    #
          ITEM SCDCRECCDFLG B(0,57,1);    # 1 = ONLY 1 REC TYPE IN AREA#
          ITEM SCDCSEQOPT U(0,58,2);      # SEQUENCE OPTIONS - 2 BITS  #
          ITEM SCDCSEQCOBOL B(0,58,1);    # TRUE = SEQUENCE IS COBOL   #
          ITEM SCDCSEQASCII B(0,59,1);    # TRUE = SEQUENCE IS ASCII   #
          ITEM SCDCLOGBUFSZ U(1,0,18);    # 6RM BUFFER SIZE (BFS) FOR  #
                                          # THE LOG FILE               #
          ITEM SCDCRECCDLEN U(1,18,12);   # LENGTH OF RECORD CODE ENTRY#
          ITEM SCDCFITLENG U(1,30,6);     # AREA FIT LENGTH(WORDS).    #
          ITEM SCDCFITPTR U(1,36,6);      # OFFSET POINTER,RELATIVE TO #
                                          # START OF SUBJECT DATA      #
                                          # CONTROL ENTRY,TO THE FIT.  #
          ITEM SCDCARSYMADR U(1,42,18);   # CONTAINS THE SYMBOL TABLE  #
                                          # ADDRESS OF SUBJECT AREA--- #
                                          # USED FOR INTERNAL PROCESS- #
                                          # ING ONLY.                  #
          ITEM SCDCSDAORD U(2,6,12);      # ORDINAL NUMBER OF THE SDA  #
                                          # PROCEDURE                  #
          ITEM SCDCSDAPRCN U(2,18,42);    # SDA PROCEDURE NAME U THRU  #
                                          # 7 CHARACTERS LEFT JUSTIF-  #
                                          # IED WITH ZERO FILL         #
          ITEM SCDCCDSYSFLG B(3,35,1);    # 1 = SYSTEM IS SPECIFIED    #
          ITEM SCDCCDTBLENG U(3,36,6);    # COMP/DECOMP TABLE LENG(WDS)#
          ITEM SCDCCDTBLPTR U(3,42,18);   # OFFSET PTR FROM START OF   #
                                          # DATA CONTROL ENTRY TO THE  #
                                          # COMP/DECOMP TABLE ENTRY    #
          ITEM SCDCARFITWRD U(6,0,60);    # FIT WORD                   #
