!*** MODULE $SDFDEF ***
!DEC$ OPTIONS/ALIGN=(RECORDS=PACKED,COMMONS=PACKED)/NOWARN
 ! 
 !  Symbol definition
 ! 
	PARAMETER SDF$K_NAME = '0000000A'X
	PARAMETER SDF$C_NAME = '0000000A'X
	STRUCTURE /SDFDEF/
	    UNION
	        MAP
	        BYTE      SDF$B_GSDTYP			 ! Maps over GSY$B_GSDTYP 
	        END MAP
	        MAP
	            ! unsupported type CHARACTER*0 SDF$T_START
	            BYTE      %FILL
	        END MAP
	    END UNION
	    BYTE      SDF$B_DATYP			 ! Maps over GSY$B_DATYP 
	    INTEGER*2 SDF$W_FLAGS			 ! Maps over GSY$W_FLAGS 
	    BYTE      SDF$B_PSINDX			 ! Owning psect number 
	    INTEGER*4 SDF$L_VALUE			 ! Value of symbol 
	    BYTE      SDF$B_NAMLNG			 ! Length of name 
	    CHARACTER*31 SDF$T_NAME			 ! Symbol name 
	END STRUCTURE	! SDFDEF
!DEC$ END OPTIONS