[ttml2] Pull Request: mapping btw rb and rt in complex cases

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

== mapping btw rb and rt in complex cases ==
closes #247 by indicating that mapping btw rb and rt in complex cases is implementation dependent 



See https://github.com/w3c/ttml2/pull/623

Received on Friday, 2 February 2018 00:45:54 UTC