On 12/1/06, Ian Hickson <[EMAIL PROTECTED]> wrote:

Aaaaah! Sorry, I hadn't understood this. So, to put it another way, you
want a way to introduce author-specific semantics into your HTML
documents?

Almost. I want to understand why non-HTML5-defined semantics would be
harmful. I don't think we're in danger of each web author inventing
their own elements.



> 
<http://listserver.dreamhost.com/pipermail/whatwg-whatwg.org/2006-December/008171.html>
>
> But it is a question, not a request. I don't want to request something
> that would be harmful. So, what is the downside of the example in that
> earlier email?

Well, SVG itself would arguably be bad because it is poor from a semantic
standpoint.

HTML is poor from a semantic standpoint. Doesn't bother me. I make
layouts with tables and headings with bold and lists with sequences of
<p> tags. I'll probably never write pretty HTML, and I wouldn't be
surprised if billions of people are just like me. Is HTML5 going to
prevent me from authoring in that style?

However, as far as generic author-defined semantics go, that's
what the "class" attribute is for.  Microformats.org, for example, use the
"class" attribute to introduce calendar semantics and the like into HTML.
You take the closest fitting HTML element, semantically, and then augment
it with your classes.

Yes, I understand those, and I think they might work. Why is it
harmful to allow the document I posted in the mail below as well?

<http://listserver.dreamhost.com/pipermail/whatwg-whatwg.org/2006-December/008171.html>


Introducing author-defined markup into HTML would be bad from a semantic
and accessibility point of view because UAs would not be able to derive
any meaningful information or default presentation from the content, and
thus users would not be able to access the data.

Right, so no one will use those things unless browsers support them.
Is that bad?

--

Robert Sayre

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