[ttml2] Pull Request: Clarify text combine application (#1086).

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

== Clarify text combine application (#1086). ==
Closes #1086.

See https://github.com/w3c/ttml2/pull/1087

Received on Friday, 24 May 2019 08:04:15 UTC