Re: doc: explain how to add lyrics to polyphonic sections (issue 3236) (issue 8384043)

[tdanielsmusic]

This expresses pretty much what already appears
under Temporary polyphonic passages in Section 1.5.2
of the NR, although using rather more words.  It
should not be repeated here.  By all means replace
it with a reference to the appropriate part of 1.5.2.

The reason is as usual - the NR is already too long.
We must not repeat material, or expand it beyond
what is the minimum required to give the user the
_reference_ information.

Trevor


https://codereview.appspot.com/8384043/