Since the NR has the wonderful introduction to single-staff
polyphony, can this be simply inserted into the LM at the appropriate
point. I'm sure new users will have a much easier time of engraving
their music, and many problems can be avoided later if this topic is
presented in the LM the same way it's presented in the NR. Unless, of
course, there's a fundamental reason not to. In which case, okay.