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RE: NEW: Issue #1761

From: Gregg Vanderheiden <gv@trace.wisc.edu>
Date: Fri, 9 Dec 2005 09:03:50 -0600
To: "'Johannes Koch'" <koch@w3development.de>, <w3c-wai-gl@w3.org>
Message-ID: <005201c5fcd1$c3bbdb00$ee8cfea9@NC6000BAK>

Thanks Johannes

That is the way we have been using the term.   We should probably make it
explicit in our definition. 

Thanks for the DI clarification.  Since we derive it from them it is good to
have their blessing on that interpretation as well.  


 -- ------------------------------ 
Gregg C Vanderheiden Ph.D. 
Professor - Ind. Engr. & BioMed Engr.
Director - Trace R & D Center 
University of Wisconsin-Madison 

-----Original Message-----
From: w3c-wai-gl-request@w3.org [mailto:w3c-wai-gl-request@w3.org] On Behalf
Of Johannes Koch
Sent: Friday, December 09, 2005 2:55 AM
To: w3c-wai-gl@w3.org
Subject: Re: NEW: Issue #1761

bugzilla@webby.trace.wisc.edu wrote:

>   Issues with "delivery unit"
>     -> http://trace.wisc.edu/bugzilla_wcag/show_bug.cgi?id=1761

"Also, "delivery unit" is not the same as "page" in most cases. In
retrieving a page, a user agent typically makes a number of HTTP requests -
for style sheets, images, etc., after retrieving the XHTML, SVG etc.,
document that refers to them. If by "page" we mean just the XHTML or SVG
document, then the statement in the WCAG 2.0 draft that delivery units and
pages are often equivalent is correct; but I suspect that whatever people
mean by "page" (an ambiguous term, admittedly), they wish to include at
least some of the additional resources that are typically retrieved in
separate HTTP requests after the document, in a markup language, is

I had a problem with the definition, too. So I asked the DI group

According to the DI WG, a deliviery unit _is_ the result of a main request
_and_ the additional requests automatically generated by the uaser agent.
See Rotan's reply at
Unfortunately, the DI glossary does not include this definition :-(
Johannes Koch
In te domine speravi; non confundar in aeternum.
                             (Te Deum, 4th cent.)
Received on Friday, 9 December 2005 15:07:14 UTC

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