[ttml2] Note #visibility implied features

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

== Note #visibility implied features ==
Shouldn't `#visibility` be accompanied with a note indicating implied features, e.g. `#visibility-block`, etc...

Please view or discuss this issue at https://github.com/w3c/ttml2/issues/839 using your GitHub account

Received on Monday, 18 June 2018 22:26:02 UTC