[ttml1] Pull Request: Clarify the default value of blur radius for tts:textOutline

palemieux has just submitted a new pull request for https://github.com/w3c/ttml1:

== Clarify the default value of blur radius for tts:textOutline ==
Closes #351

See https://github.com/w3c/ttml1/pull/356

Received on Thursday, 5 July 2018 16:05:14 UTC