[ttml2] Add ``ttm:alt`` metadata attribute item.

• From: Glenn Adams via GitHub <sysbot+gh@w3.org>
• Date: Fri, 10 Nov 2017 07:27:22 +0000
• To: public-tt@w3.org
• Message-ID: <issues.opened-272842802-1510298840-sysbot+gh@w3.org>

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

== Add ``ttm:alt`` metadata attribute item. ==
See also #479.

Please view or discuss this issue at https://github.com/w3c/ttml2/issues/490 using your GitHub account

Received on Friday, 10 November 2017 07:27:24 UTC