! *** PREDECLARED TYPES
     
      %IF %DECLARED ( %BASIC$QUADWORD_DECLARED ) = 0 %THEN
         RECORD BASIC$QUADWORD
            LONG FILL ( 2 )
         END RECORD
         %LET %BASIC$QUADWORD_DECLARED = 1
      %END %IF
     
      %IF %DECLARED ( %BASIC$OCTAWORD_DECLARED ) = 0 %THEN
         RECORD BASIC$OCTAWORD
            LONG FILL ( 4 )
         END RECORD
         %LET %BASIC$OCTAWORD_DECLARED = 1
      %END %IF
     
      %IF %DECLARED ( %BASIC$HFLOAT_AXP_DECLARED ) = 0 %THEN
         RECORD BASIC$HFLOAT_AXP
            LONG FILL ( 4 )
         END RECORD
         %LET %BASIC$HFLOAT_AXP_DECLARED = 1
      %END %IF
     
      %IF %DECLARED ( %BASIC$F_FLOATING_COMPLEX_DECL ) = 0 %THEN
         RECORD BASIC$F_FLOATING_COMPLEX
            SINGLE REAL_PART
            SINGLE IMAGINARY_PART
         END RECORD
         %LET %BASIC$F_FLOATING_COMPLEX_DECL = 1
      %END %IF
     
      %IF %DECLARED ( %BASIC$D_FLOATING_COMPLEX_DECL ) = 0 %THEN
         RECORD BASIC$D_FLOATING_COMPLEX
            DOUBLE REAL_PART
            DOUBLE IMAGINARY_PART
         END RECORD
         %LET %BASIC$D_FLOATING_COMPLEX_DECL = 1
      %END %IF
     
      %IF %DECLARED ( %BASIC$G_FLOATING_COMPLEX_DECL ) = 0 %THEN
         RECORD BASIC$G_FLOATING_COMPLEX
            GFLOAT REAL_PART
            GFLOAT IMAGINARY_PART
         END RECORD
         %LET %BASIC$G_FLOATING_COMPLEX_DECL = 1
      %END %IF
     
      %IF %DECLARED ( %BASIC$H_FLOAT_AXP_CMPLX_DCL ) = 0 %THEN
         RECORD BASIC$H_FLOATING_COMPLEX_AXP
            BASIC$HFLOAT_AXP REAL_PART
            BASIC$HFLOAT_AXP IMAGINARY_PART
         END RECORD
         %LET %BASIC$H_FLOAT_AXP_CMPLX_DCL = 1
      %END %IF
    
    
    ! 
    !  Symbol definition
    ! 
      DECLARE LONG CONSTANT SDF$K_NAME = 10
      DECLARE LONG CONSTANT SDF$C_NAME = 10
      DECLARE LONG CONSTANT SDF$S_SDFDEF = 41
      record SDFDEF
         group SDF$R_GSDTYP_OVERLAY
            variant
               case
                  BYTE SDF$B_GSDTYP         ! Maps over GSY$B_GSDTYP 
               case
                  group SDF$R_GSDTYP_FIELDS
                     STRING SDF$T_START = 0
                     BYTE SDFDEF$$_FILL_1
                  end group SDF$R_GSDTYP_FIELDS
            end variant
         end group SDF$R_GSDTYP_OVERLAY
         BYTE SDF$B_DATYP                   ! Maps over GSY$B_DATYP 
         WORD SDF$W_FLAGS                   ! Maps over GSY$W_FLAGS 
         BYTE SDF$B_PSINDX                  ! Owning psect number 
         LONG SDF$L_VALUE                   ! Value of symbol 
         BYTE SDF$B_NAMLNG                  ! Length of name 
         STRING SDF$T_NAME = 31             ! Symbol name 
      end record SDFDEF