[GreenKeys] 15 cords

[Jim Haynes]

Another interesting trivium is that there is disagreement about
red and black cords and what they mean.  I forget now if red is
printer and black is keyboard or if that is the opposite.  What
I do know is that Western Union did it one way and Bell and the
U.S. government did it the other way.

 	---

 	"Ya can argue all ya wanna, but it's dif'rent than it was."
 	"No it ain't! No it ain't!  But ya gotta know the territory."
 		Meredith Willson, The Music Man