*COMDECK  COMDIDS 
BASED ARRAY DID [0] S(1) ;
          BEGIN 
          ITEM   DIDIDEN      U(0,0,12);# HEADER TABLE IDENTIFIER      #
          ITEM   DIDRCID      U(0,12,12);# CLASS ID                    #
          ITEM   DIDSTID      U(0,24,12);# STRUCTURE ID                #
          ITEM   DIDNELM      U(0,42,18);# NO OF ELEMENTS              #
          ITEM   DIDENTR      U(0,0,60);#                              #
          ITEM   DIDDICD      U(0,00,06);# DATA ITEM CODE              #
          ITEM   DIDRWA       U(0,06,09);# REL WORD POS                #
          ITEM   DIDRBP       U(0,15,06);#REL BIT POS                  #
          ITEM   DIDLBIT      U(0,21,12);# LENGTH IN BITS              #
          ITEM   DIDMAPT      U(0,33,2);# MAPPING LEVEL                #
          ITEM   DIDDFMD      U(0,45,15);# -> DOMAIN FORMAT            #
          END 
