[ttml2] Back out requirement for xml:id on out-of-line region.

• From: Glenn Adams via GitHub <sysbot+gh@w3.org>
• Date: Sun, 09 Sep 2018 21:31:30 +0000
• To: public-tt@w3.org
• Message-ID: <issues.opened-358414320-1536528689-sysbot+gh@w3.org>

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

== Back out requirement for xml:id on out-of-line region. ==
The following in 11.1.2 inadvertently invalidates valid TTML1 content where this constraint did not appear. Suggest changing 'must' to 'should'.

>An out-of-line `region` element must specify an `xml:id` attribute.

Note that there is no harm in having an out-of-line region without an ID. It just means that no `@region` attribute can reference it. So, while such usage is inefficient, it doesn't break anything.

Please view or discuss this issue at https://github.com/w3c/ttml2/issues/989 using your GitHub account

Received on Sunday, 9 September 2018 21:31:31 UTC