Comment #3 on issue 2998 by [email protected]: Patch: IR: Improve performer documentation
http://code.google.com/p/lilypond/issues/detail?id=2998
My current work at <https://github.com/johannesrohrer/lilypond> supersedes this patch; see <http://code.google.com/p/lilypond/issues/detail?id=3003#c1>. Probably this issue can be closed, maybe as a duplicate of #3003?
