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Re: Another summary of alt="" issues and why the spec says what it says

From: Joshue O Connor <joshue.oconnor@cfit.ie>
Date: Fri, 18 Apr 2008 11:05:40 +0100
Message-ID: <48087274.4030702@cfit.ie>
To: Steven Faulkner <faulkner.steve@gmail.com>
Cc: Ian Hickson <ian@hixie.ch>, Jim Jewett <jimjjewett@gmail.com>, david.dailey@sru.edu, John Foliot <foliot@wats.ca>, HTML4All <list@html4all.org>, Dan Connolly <connolly@w3.org>, HTML WG <public-html@w3.org>, "Michael(tm) Smith" <mike@w3.org>, wai-xtech@w3.org, Al Gilman <Alfred.S.Gilman@ieee.org>

Steven Faulkner wrote:
> does this provide some examples of how it could help in this example?

Thanks for that Steve. So it seem to me that the use of the aria 
described can be added to many elements like <p>, or <h> etc.

  > <h2>Photograph 2</h2>
>   <img src=321098412.jpeg>
>   <p>View North East from 23 High Street.</p>

[...]

> announces:
> Photograph 2 View North East from 23 High Street.

> Not bad agreed.

That would only be the case if the screen reader user was using SAY ALL 
or using the cursor keys to go through the content in a linear manner. 
So normally to create the programmatic association you would use @alt 
like this: <img src=321098412.jpeg" alt="View North East from 23 High 
Street.">

> what is known is that describebdy maps to MSAA description, so the
> explicit association is provided and semantic relationship is provided
> what is in this <p> is a description of <img> 321098412.jpeg
> 
> so could announce;
> 
> "Photograph 2  Description  View North East from 23 High Street."

[...]

> It could also use the description to provide a label in the graphics
> list (In JAWS Graphics list CTRL+INSERT+G), rather than it being
> absent.
> 
> does this provide some examples of how it could help in this example?

It does in terms of what aria described by is useful for, it is the 
point that a contiguous relationship such as that defined by <img 
src=321098412.jpeg" alt="View North East from 23 High Street."> being 
somehow prone to error that I don't understand.

Cheers

Josh
Received on Friday, 18 April 2008 10:07:43 GMT

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