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RE: Why an standalone image shall conform to WCAG 2.0? (was Re: BIG ISSUE -- re Delivery Units)

From: Yvette Hoitink <y.p.hoitink@heritas.nl>
Date: Mon, 13 Feb 2006 10:57:38 +0100
To: 'Carlos A Velasco' <Carlos.Velasco@fit.fraunhofer.de>, 'Gregg Vanderheiden' <gv@trace.wisc.edu>
Cc: w3c-wai-gl@w3.org
Message-id: <001c01c63083$ec7a87e0$d200a8c0@heritas.local>

Carlos Velasco asked:
> You keep ignoring the critical question I raised in my first 
> email to this thread. Here is my last try. In [1] it is said:
> 
> <quote>
> Conformance Notes
> 
> A delivery unit conforms to WCAG 2.0 at a given conformance 
> level only if all content provided by that delivery unit 
> conforms at that level.
> </quote>
> 
> That is senseless. Many DUs contain media elements that are 
> made accessible through the whole set of elements in the main 
> DU, or via linked information (e.g., longdesc). 

Hi Carlos,

It seems to me you and Gregg agree! A standalone image does not conform to
WCAG because it should only be considered in context (with HTML that
includes alt, longdesc, etc). 

The problem is that an Image meets the current definition of Delivery Unit.
Gregg was merely pointing out the problem with that: that images are now
required to conform by themselves. Because that was never intended, Gregg
and others have been trying to find a better term so it is clear standalone
image don't need to conform but only in context. 

Yvette Hoitink
Heritas, Alphen aan den Rijn, the Netherlands
E-mail: y.p.hoitink@heritas.nl
WWW: http://www.heritas.nl 
Received on Monday, 13 February 2006 09:57:55 GMT

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