Steven Pemberton wrote:
On Thu, 16 Jul 2009 10:50:52 +0200, Toby Inkster <t...@g5n.co.uk> wrote:
For the same reason, xmlns:foo attributes aren't allowed in HTML4
either.
Actually, to allow for future changes, the spec says:
"If a user agent encounters an attribute it does not recognize, it
should ignore the entire attribute specification (i.e., the attribute
and its value)."
http://www.w3.org/TR/html401/appendix/notes.html#notes-invalid-docs
In other words, it should act as if it weren't there. So it is
allowed, but no meaning is defined.
XHTML 1.* say something similar.
As does XHTML M12N 1.0 and 1.1 - see [1] step 6.
[1]
http://www.w3.org/TR/xhtml-modularization/conformance.html#s_conform_user_agent
Steven
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