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Fwd: Re: Part II: Issues raised during Mac IE evaluation of UAAG 1.0

From: Jon Gunderson <jongund@uiuc.edu>
Date: Tue, 02 Apr 2002 17:34:46 -0600
Message-Id: <>
To: w3c-wai-ua@w3.org

>Date: Tue, 02 Apr 2002 17:34:35 -0600
>To: "Ian B. Jacobs" <ij@w3.org>
>From: Jon Gunderson <jongund@uiuc.edu>
>Subject: Re: Part II: Issues raised during Mac IE evaluation of UAAG 1.0
>By requiring something other than color it will make the information much 
>more salient to the user.  If I can't see colors or distinguish them 
>easily, I need something else to determine that this element is different 
>from the elements that are around it.
>At 09:32 AM 4/2/2002 -0500, you wrote:
>>Jon Gunderson wrote:
>>>Some people only see in black and white (using the rods of their retina)
>>>so different shades of gray are hard to distinguish.  So having a highlight
>>>not dependent on color or sahdes of gray is important to some disabilities
>>>to easily recognize highlighting and important element on a page.
>>In issue 484 [1], we resolved that greys count as colors.
>>This leaves black and white. If the highlight mechanism
>>relies on color, and the user can select color preferences,
>>then no system in the world would let you choose any color
>>except white and black. So the user can change the highlight
>>colors to black and white if desired. This is covered
>>by the user control checkpoint.
>>I can't justify *certainly not at a P1 level)
>>why the default styles must not rely on color if the
>>user can change the colors (including black and white). I thought
>>maybe it was that some people might not realize that they
>>could change the colors, but we require documentation of
>>such features at P1, so the requirement is at best a P3.
>>And, as I pointed out, this would undoubtedly mean differing
>>from operating environment conventions, which is not a good
>>thing. So making this a P1 requirement may interfere with
>>the usability for other users (including users with disabilities,
>>who might, for example, be distracted by lots of icons, boxes,
>>There's no technical reason that makes the default checkpoint
>>hard to implement. I'm finding it very hard to justify as
>>a checkpoint.
>>  - Ian
>>[1] http://www.w3.org/WAI/UA/2001/08/issues-20010830#484
>>Ian Jacobs (ij@w3.org)   http://www.w3.org/People/Jacobs
>>Tel:                     +1 718 260-9447
>Jon Gunderson, Ph.D., ATP
>Coordinator of Assistive Communication and Information Technology
>Division of Rehabilitation - Education Services
>College of Applied Life Studies
>University of Illinois at Urbana/Champaign
>1207 S. Oak Street, Champaign, IL  61820
>Voice: (217) 244-5870
>Fax: (217) 333-0248
>E-mail: jongund@uiuc.edu
>WWW: http://www.staff.uiuc.edu/~jongund
>WWW: http://www.w3.org/wai/ua

Jon Gunderson, Ph.D., ATP
Coordinator of Assistive Communication and Information Technology
Division of Rehabilitation - Education Services
College of Applied Life Studies
University of Illinois at Urbana/Champaign
1207 S. Oak Street, Champaign, IL  61820

Voice: (217) 244-5870
Fax: (217) 333-0248

E-mail: jongund@uiuc.edu

WWW: http://www.staff.uiuc.edu/~jongund
WWW: http://www.w3.org/wai/ua
Received on Tuesday, 2 April 2002 18:30:53 UTC

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