Midi and MCL

[djskrien@COLBY.EDU (Dale J. Skrien)]

I am using MCL with the Apple Midi Manager 2.0.  In the Midi Manager's
documentation, it refers to two constants
	MidiInvisiblePort
	MidiPortTypeMask
but it never gives the values of either of the constants.  The
MCL Interface file "MIDI.lisp" does not contain definitions of
those two constants either.

Does anyone out there know their values so that I can add them
to my MIDI.lisp and use them in my code?