- From: Dick Bulterman <Dick.Bulterman@cwi.nl>
- Date: Thu, 11 Mar 2010 15:26:33 +0100
- To: Philip Jägenstedt <philipj@opera.com>
- CC: Silvia Pfeiffer <silviapfeiffer1@gmail.com>, "Michael(tm) Smith" <mike@w3.org>, HTML Accessibility Task Force <public-html-a11y@w3.org>
On the multi-track issue: > I agree, but think that the "nice feature" is the possibility of having parallel text tracks, while having mutually exclusive tracks is absolutely fundamental. If we can't handle grouping in a nice way we can discard it and require scripts to achieve parallel text tracks. But let's finish this in the HTML WG. I would continue to argue that two separate concepts are being mixed here: 1. a general mechanism for selecting alternative forms of content (or structure), and 2. a synchronization mechanism that allows 0, 1, or more elements to be displayed at the same time. The first (which SMIL handles as <switch> and which is being reinvented here as <trackgroup>) should be totally decoupled from the second (which SMIL handles as <par>,<seq> and <excl>). It will make your life -- and that of authors -- much easier in the future. -d.
Received on Thursday, 11 March 2010 14:27:22 UTC