[ttml2] Pull Request: apply fix for ttml1/#197

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

== apply fix for ttml1/#197 ==
partially addresses #358

See https://github.com/w3c/ttml2/pull/574

Received on Thursday, 18 January 2018 23:01:09 UTC