NAME   
        SetABPenDrMd -- Set pen colors and draw mode for a rastport. (v39)

   SYNOPSIS
        SetABPenDrMd( rp, apen, bpen, mode )
                                  a1  d0     d1    d2

        void SetABPenDrMd( struct rastport *, ulong, ulong, ulong );

   FUNCTION
        Set the pen values and drawing mode for lines, fills and text.
        Get the bit definitions from rastport.h

   INPUTS
        rp - pointer to rastport structure.
        apen - primary pen value
        bpen - secondary pen value
        mode - 0-255, some combinations may not make much sense.

   RESULT
        The mode set is dependent on the bits selected.
        Changes minterms to reflect new drawing mode and colors.
        Sets line drawer to restart pattern.

        NOTES
        This call is essentially the same as a sequence of
        SetAPen()/SetBPen()/SetDrMD() calls, except that it is
        significantly faster. The minterms will only be generated
        once, or not at all if nothing changed (warning to illegal
        rastport pokers!).

   BUGS

   SEE ALSO
        setapen() setbpen() setdrmd() graphics/rastport.h