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NAME
    GfxLookUp -- find a graphics extended node associated with a
                 given pointer (V36)

SYNOPSIS
    result = GfxLookUp( pointer );
      d0                   a0

    struct ExtendedNode *GfxLookUp( void *);

FUNCTION
    Finds a special graphics extended data structure (if any) associated
    with the pointer to a data structure (eg: ViewExtra associated with
    a View structure).

INPUTS
    pointer = a pointer to a data structure which may have an
              ExtendedNode associated with it (typically a View ).

RESULT
    result = a pointer to the ExtendedNode that has previously been
             associated with the pointer.

BUGS

SEE ALSO
    graphics/gfxnodes.h GfxNew() GfxFree() GfxAssociate()