! *** 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
    
    
    ! 
    !  Module header record (MHD)
    ! 
      DECLARE LONG CONSTANT MHD$C_MHD = 0   ! Main header record 
      DECLARE LONG CONSTANT MHD$C_LNM = 1   ! Language name and version 
      DECLARE LONG CONSTANT MHD$C_SRC = 2   ! Source file specification 
      DECLARE LONG CONSTANT MHD$C_TTL = 3   ! Title text of module 
      DECLARE LONG CONSTANT MHD$C_CPR = 4   ! Copyright notice 
      DECLARE LONG CONSTANT MHD$C_MTC = 5   ! Maintenence status 
      DECLARE LONG CONSTANT MHD$C_GTX = 6   ! General text 
      DECLARE LONG CONSTANT MHD$C_MAXHDRTYP = 6  ! Maximum allowable type 
      DECLARE LONG CONSTANT MHD$S_MHDEF = 37
      record MHDEF
         BYTE MHD$B_RECTYP                  ! Record type (OBJ$C_MHD) 
         BYTE MHD$B_HDRTYP                  ! Type field for MHD 
    ! Types of header records 
         BYTE MHD$B_STRLVL                  ! Structure level 
         WORD MHD$W_RECSIZ                  ! Maximum record size 
         BYTE MHD$B_NAMLNG                  ! Module name length 
         STRING MHD$T_NAME = 31             ! Module name 
      end record MHDEF