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RE: What assistive technology does (and doesn't do)

for

From: Rachel Tanenhaus
Date: Dec 17, 2003 8:28AM


Tim gave me this fantabulous response:

<stuff deleted>

> I would say that if the information is not encoded in the mark-up, it
> should somehow be explicitly indicated in the page content.


That's a really useful rule! Thank you so much! (Even better, I can
explain it to designers, and they'll *get* it!)


> This is what I mean.

> <img src="picture.jpg">

> That mark-up tells you that the content is an image. It also
indicates
> where the image is located. It does not tell you what information the

> image may contain. Therefore, the alt attribute for the image does
not
> need to include information such as that this content is an image or
where > it is located (if that is important to the user.) It does need
to contain > other information that is not part of the mark-up for the
content.

> This is why it is so important to separate presentation from
structure.
> When the mark-up is serving double duty, it is no longer clear whether
> something like the h1 element is being used to indicate a level 1
header
> or just that someone wanted to use larger font sizes or whatever.

Indeed. I'll point that out to them too.

> Rachel, I personally have concerns about the approach of designing to
> common functionality. Which AT are we letting set the common
> functionality standard? Are we looking at just the most current
versions > or which versions are owned by what percentage of the user
population?
> When I answer those questions, I also seem to find serious flaws or
> concerns with the answers.

Exactly. And when I see that debate on some of these lists, I've
noticed that it's turned into something of a religious war - no one's
really going to convince anyone else anyway. :)

> I sometimes wonder if the best approach is just to design with
standards,
> test with real users (every chance possible,) remain open to
suggestions
> from customers, and use what you learn to improve upon future efforts.

La. I'm the choir. Preach on. :)

Unfortunately, so many people design web sites these days relying on
their authoring tools rather than knowledge of HTML that "design with
standards" is a new concept for them. I do emphasize in my trainings
that designers should involve real, honest-to-God people with
disabilities in evaluating their sites.

Thanks again for a useful and thoughtful response.

-Rachel



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