[ttml2] Pull Request: Specify missing validation semantics (#362, #363, #367, #541).

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

== Specify missing validation semantics (#362, #363, #367, #541). ==
Closes #362.
Closes #363.
Closes #367.
Closes #541.

See https://github.com/w3c/ttml2/pull/594

Received on Sunday, 28 January 2018 03:00:11 UTC