On 10 Feb 2006, at 19:14, Patrick H. Lauke wrote:

Stephen Stagg wrote:

And how, pray tell, would a screen reader know - based on a series of presentational rules - what the meaning of a made-up tag soup is?
The same way that they would with normal HTML, by reading the XML, and the stylesheet and guessing, if an element has the font- weight:bold
element, then it should be emboldened.

Wrong. Screen readers do not look at the CSS and try to guesstimate what is a heading, what's a paragraph, what's a list, etc.

Not wrong actually, Good screen-readers DO read the CSS to work out various things, incuding to see if someting has a display:hidden. I do acknowledge that this is an area that would have to be developed in screen-readers but that does not invalidate the idea.

Screen-Reader hints are still presentational devices.

Screen readers look at the structure of the document, which is clearly defined as it's standardised in the HTML specification.

And they PRESENT it to someone with visual impairment, The presentational properties should be set in the presentational layer

I believe (tho haven't
checked) that there are a whole load of CSS properties to do with controlling assistive-technologies output.

There are aural stylesheets, which only give hints about how to present something aurally. They do not define purpose or role of the elements they refer to, and THAT is what counts.

As is said, I wasn't sure about the exact nature of the aural stylesheets. Thanks for the info, Perhaps this is something that could be developed to improve the designers' control over output to screen-readers? no?

--
Patrick H. Lauke
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