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RE: PROPOSAL: Assistive Technology Compatibility

From: Jon Gunderson <jongund@staff.uiuc.edu>
Date: Mon, 19 Apr 1999 22:14:43 -0500
Message-Id: <199904201518.KAA05992@staff1.cso.uiuc.edu>
To: "Denis Anson" <danson@miseri.edu>, <w3c-wai-ua@w3.org>
DOM is especially important to developers like pwWebSpeak who will be using
the DOM to assist in there own rendering.  The lack of full implementation
of DOM makes it difficult to use DOM to render all of the WWW content.  For
example in our own project here at UIUC we are using the Microsoft DOM for
IE 4.0 and the current API to the DOM doesn't allow access to the text
content of the CAPTIONS element.  You can detect that the TABLE has a
caption, and adjust formatting.  But you cannot access the text content of
the element.  Clearly we want to make sure that these types of problems do
not limit AT developers.

Your concern probably rests with the use of accessibility APIs for use by
technologies like screen readersc and that is required under under
checkpoint 7.2.1.
Checkpoint 7.2.1 could state this more clearly by adding the phrase "and
rendered content" after the words "user interface".  The new guideline
would read:

Checkpoint 7.2.1
Provide programatic access for dependent user agents to the user interface
and rendered content by using operating system and development language
accessibility resources and conventions.


At 09:03 AM 4/20/99 -0400, Denis Anson wrote:
>I still think that 7.2.6 has the guideline and the technique backwards.  In
>all other aspects of the guidelines, we eschew direct reference to any
>particular method of providing access, and state what access or function
>should be provided.  The techniques document should describe ways to do
>Following this model, 7.2.6 should read, "Provide full access to the content
>of the WWW to AT devices and dependent user agents."  The techniques would
>include fully implementing DOM Level 1 and other DOM specifications that
>enhance access by people with disabilities.
>DOM is one specification for making content accessible.  Other
>specifications could be developed that would be equally effective.
>(Although, being non-standard, they would be harder to develop for.)  If the
>*guidelines* document specifies the DOM, we are saying that all other
>implementations are not valid.  I don't think we want to do that.
>Denis Anson, MS, OTR
>Assistant Professor
>Computer Access Specialist
>College Misericordia
>301 Lake Street
>Dallas, PA 18612
>The International Organization of Assistive Technology Professionals
>Member since 1989
>-----Original Message-----
>From: w3c-wai-ua-request@w3.org [mailto:w3c-wai-ua-request@w3.org]On
>Behalf Of Jon Gunderson
>Sent: Monday, April 19, 1999 4:45 AM
>To: w3c-wai-ua@w3.org
>Subject: PROPOSAL: Assistive Technology Compatibility
>I have not seen much response on the list of revised checkpoints on the
>assistive technology compatibility PROPOSAL from March 9th:
>The chair is taking this lack of discussion as an indication that this
>message captures the consensus of the group.  Please review the proposal,
>if there are no additional comments before the telecon Wednesday I am only
>going to schedule more time for other issues to be discussed (navigation
>issues) at the wednesday telecon.
>Jon Gunderson, Ph.D., ATP
>Coordinator of Assistive Communication and Information Technology
>Division of Rehabilitation - Education Services
>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
>	http://www.als.uiuc.edu/InfoTechAccess
Jon Gunderson, Ph.D., ATP
Coordinator of Assistive Communication and Information Technology
Division of Rehabilitation - Education Services
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
Received on Tuesday, 20 April 1999 11:18:14 UTC

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