[ttml2] Add validation processing procedures.

skynavga has just created a new issue for https://github.com/w3c/ttml2:

== Add validation processing procedures. ==
Add validation processing procedures.

Editorial note from 2014-05-21.

Please view or discuss this issue at https://github.com/w3c/ttml2/issues/367 using your GitHub account

Received on Sunday, 4 June 2017 19:28:46 UTC