[ttml2] Pull Request: Issue 0221 writing mode and direction

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

== Issue 0221 writing mode and direction ==
Closes #221.

See https://github.com/w3c/ttml2/pull/338

Received on Friday, 26 May 2017 16:45:31 UTC