- From: Gregg Vanderheiden <gv@trace.wisc.edu>
- Date: Fri, 10 Feb 2006 00:19:48 -0600
- To: "'Bailey, Bruce'" <Bruce.Bailey@ed.gov>, <w3c-wai-gl@w3.org>
- Message-ID: <003001c62e0a$003aec10$ee8cfea9@NC6000BAK>
A perceivable unit is unknown. A cell phone may break a delivery unit up into several perceivable units. Different browsers may present very different renderings of a delivery unit. So we aren't using perceivable units at all. (did have one but it is now gone). If the parts of a frame are not intended to be viewed separately then they are not Web Units. Yes - content is a global term for what we are talking about. It is not specific as you point out. Gregg -- ------------------------------ Gregg C Vanderheiden Ph.D. Professor - Ind. Engr. & BioMed Engr. Director - Trace R & D Center University of Wisconsin-Madison The Player for my DSS sound file is at http://tinyurl.com/dho6b <http://tinyurl.com/cmfd9> _____ From: w3c-wai-gl-request@w3.org [mailto:w3c-wai-gl-request@w3.org] On Behalf Of Bailey, Bruce Sent: Thursday, February 09, 2006 7:47 PM To: w3c-wai-gl@w3.org Subject: RE: BIG ISSUE -- re Delivery Units > Hi Bruce Thank you Gregg for your patient efforts with remedial vocabulary lessons. > Here is the DI group definition of perceivable unit I have been referencing the DI terms from the WCAG2 glossary. That hasn't helped much. > You have it at the wrong end of the chain. Okay, so sometimes (e.g., a PDF file) a Delivery Unit contains multiple Perceivable Units (e.g., pages), other times (e.g., a web page with images) a Perceivable Unit contains multiple Delivery Units. Are you satisfied that Web Unit avoids this conundrum? How about my example of a frame based web "page"? Each frame is a Web Unit (so each can have a title), but the whole bundle (web quote page unquote) is also a Web Unit? The term content has similar issues. Sometimes content is just part of a web page, content refers to a whole page or web application, sometimes content refers to a collection of pages or a whole site. By the way, is a Perceivable Unit only that which fits into a widow (without scrolling) at any given time? Again, I am hoping such a question is moot, at least with regard to WCAG 2.0.
Received on Friday, 10 February 2006 06:20:12 UTC