AuxInPtr                 Pointer to AUX: Input Driver

 AuxInPtr                                                                [TP]

    Turbo Pascal supports the predefined device AUX:, both as a filename
    and as a predefined file variable. Input for this device is handled
    through the function AuxIn : Char, which simply makes MS-DOS system
    call 3. You can declare your own function AuxIn, then assign its
    address to AuxInPtr; this makes your function the new input driver for
    the AUX: device.

  -------------------------------- Example ---------------------------------

           AuxInPtr := Ptr(MyAuxIn);