LM 5.2 redistribute

[Graham Percival]

Hi Trevor,

Could you redistribute the material in LM 5.2 Scores and parts
elsewhere in the LM?  Maybe beef up LM 2.4.1, maybe insert a new
LM 2.4.2 that continues the "scores and parts" theme, maybe
something in LM 3... whatever.

I leave it up to your judgement; I just want to start abolishing
LM 5 and making the new Usage document, so I'd like that
subsection gone so it's easier to keep track of what I need to
deal with.  :)

Cheers,
- Graham