The spec tells us:
The lang attribute only applies to HTML documents. Authors must not
use the lang attribute in XML documents. Authors must instead use
the xml:lang attribute, defined in XML. [XML]
To determine the language of a node, user agents must look at the
nearest ancestor element (including the element itself if the node
is an element) that has a lang or xml:lang attribute set. That
specifies the language of the node.
If both the xml:lang attribute and the lang attribute are set, user
agents must use the xml:lang attribute, and the lang attribute must
be ignored for the purposes of determining the element's language.
While the requirement for authors is pretty clear (HTML: lang; XHTML:
xml:lang), it seems to me that the user agent is asked to always
favour xml:lang even in an HTML context. Is this really what's
intended? I think this ought to be clarified.
Also:
The id DOM attribute must reflect the id content attribute.
Does that mean it should not reflect xml:id even when id is not defined?
Michel Fortin
[EMAIL PROTECTED]
http://www.michelf.com/
