Comment #7 on issue 2791 by [email protected]: [Doc]Inaccuracies in Learning manual, chapter 4
http://code.google.com/p/lilypond/issues/detail?id=2791
A request: at the beginning of chapter 4.4.2 you may want to add a link to the section where \voiceOne was first introduced, that is 3.2.2 Explicitly instantiating voices
