[musicxml] Pull Request: 58: Clarify documentation for attack and release attributes

mdgood has just submitted a new pull request for 
https://github.com/w3c/musicxml:

== 58: Clarify documentation for attack and release attributes ==


See https://github.com/w3c/musicxml/pull/124

Received on Tuesday, 8 March 2016 00:14:21 UTC