ISSUE-164: managing x-role extensions


managing x-role extensions

TTML 1.0
Raised by:
Sean Hayes
Opened on:
The TTML specification allows vendors or other interested parties to specify private role names using an x- prefix. Given the recent debate over vendor prefixes in CSS, it would probably be a good idea to revisit this concept and potentially allow a single extension registry (e.g. a W3C wiki) that provides a lightweight mechanism for users to coin new roles, share previously defined ones, and promote interoperability.
Related Actions Items:
No related actions
Related emails:
  1. Re: {minutes} TTML Agenda for 15/3/12 (from on 2012-03-15)
  2. {minutes} TTML Agenda for 15/3/12 (from on 2012-03-15)
  3. ISSUE-164 (rolenames): managing x-role extensions [DFXP 1.0] (from on 2012-03-12)

Related notes:

A registry Wiki is now set up.

Sean Hayes, 21 Mar 2012, 12:25:15

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David Singer <>, Nigel Megitt <>, Chairs, Thierry Michel <>, Philippe Le H├ęgaret <>, Atsushi Shimono <>, Staff Contacts
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