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  See also: TYPEDEF Directive
 
  Description:
 
     Use TYPEDEF to
 
        ■ Define types for procedure arguments in PROC, PROTO, and
          INVOKE statements.
 
        ■ Define types used in high-level expressions such as .IF,
          .WHILE, and .REPEAT.
 
        ■ Define pointer types so that CodeView can give appropriate
          information about the pointer.
 
        ■ Define the types for procedure arguments in procedure
          prototypes.
 
     Typical TYPEDEFs:
 
       CHAR       TYPEDEF   BYTE             ; Rename an existing type
       PCHAR      TYPEDEF   PTR   CHAR       ; Create a pointer type
       PWORD      TYPEDEF   PTR   WORD       ; Create a pointer type
       PPWORD     TYPEDEF   PTR   PWORD      ; Create a complex pointer
                                             ;  type
       PMYSTRUCT  TYPEDEF   PTR   MYSTRUCT   ; Create pointer type to
                                             ;  structure or union
       PPROTO     TYPEDEF   PROTO \
                  NEAR C arg1:byte arg2:word ; Define proc prototype
       PFUNCT     TYPEDEF   PTR   PPROTO     ; Define pointer to proc
                                             ;  prototype
     Typical uses of TYPEDEFs:
 
       user       CHAR      "Jill"           ; Use new type as initializer
       Puser      PCHAR     user             ; Initialize a pointer
       task       PROC      myvar:PMYSTRUCT  ; Pass pointer to structure
                  EXTERNDEF ppw:PPWORD       ; Define external with user
                                             ;  type
       proctbl    PFUNC     Up, Down, Home   ; Initialize procedure table
                  ∙
                  ∙
                  ∙
                  INVOKE    proctbl[bx], pos ; Call procedure from table
                                    -♦-