[Lilypond-auto] Issue 2986 in lilypond: [DOC]midiChannelMapping (introduced in 2.14) not documented in NR

[lilypond]

Status: Accepted
Owner: ----
Labels: Type-Documentation

New issue 2986 by address@hidden: [DOC]midiChannelMapping (introduced  
in 2.14) not documented in NR
http://code.google.com/p/lilypond/issues/detail?id=2986

Reported by Federico Bruni:
http://lists.gnu.org/archive/html/bug-lilypond/2012-11/msg00122.html

I think that midiChannelMapping is not properly documented.
It is listed in the context properties appendix:

midiChannelMapping (symbol)
How to map MIDI channels: per instrument (default), staff or voice.

But I can't find any place in the NR where its usage is explained.
All I can find is the explanation here:
http://lilypond.org/doc/v2.14/Documentation/changes/index.html