[ttml2] Pull Request: Improve definition of conditionally excluded (included) (#893).

skynavga has just submitted a new pull request for https://github.com/w3c/ttml2:

== Improve definition of conditionally excluded (included) (#893). ==
Closes #893.

See https://github.com/w3c/ttml2/pull/900

Received on Sunday, 15 July 2018 13:47:25 UTC