Re: TTML attributes in "no namespace"

by design; what this means is that they are in the "per-element type
partition" as defined in [1] ;

[1] http://www.w3.org/TR/1999/REC-xml-names-19990114/

a more recent formulation [2] refers to this usage as follows:

"Default namespace declarations do not apply directly to attribute names;
the interpretation of unprefixed attributes is determined by the element on
which they appear."

[2] http://www.w3.org/TR/REC-xml-names/#defaulting

the intention is that these attributes be used without a prefix
(unprefixed) and that their definition is determined by the element on
which they appear; one reason was that, with the exception of 'region', all
of these were based on or derived from existing unprefixed usage patterns
in other W3C specs (HTML, SMIL); in the case of region, we did not wish it
used as a generic vocabulary attribute, but only be used on the specific
elements for which it was defined

On Thu, Apr 26, 2012 at 9:20 AM, Andreas Tai <tai@irt.de> wrote:

> According to the TTML XSD the following attributes are in "no namespace"
>
> - region
> - style
> - begin
> - end
> - dur
> - timeContainer
>
> My question is if this was designed on purpose and if so what the
> intention was. In the spec there is no information on attributes in "no
> namespace".
>
> Best regards,
>
> Andreas
>
> --
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