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Re: Suggested note to Checkpoint 5.5 on timeliness

From: Jon Gunderson <jongund@ux1.cso.uiuc.edu>
Date: Mon, 06 Mar 2000 08:45:05 -0600
Message-Id: <4.1.20000306084304.00a87a90@staff.uiuc.edu>
To: schwer@us.ibm.com, Ian Jacobs <ij@w3.org>
Cc: w3c-wai-ua@w3.org
Ian and Rich, 
I like Rich's addition.  I think it could be expanded to say "DOM
implementation and other supported accessibility related interfaces".  

Jon



>
><PROPOSEDRICH>
>This checkpoint is designed to reduce delays that an assistive
>technology user might experience due to communication overhead when
>accessing
>parts of your application such as your DOM.
>Timely exchange is import for preventing loss of information,
>a risk when changes in content occur faster than the
>exchange with the assistive technology. One effective technique
>for providing timely access is to allow assistive technologies to run
>in the same process space as the user agent, thus eliminating
>inter-application communication delays.
></PROPOSEDRICH>
>
>Rich Schwerdtfeger
>Lead Architect, IBM Special Needs Systems
>EMail/web: schwer@us.ibm.com http://www.austin.ibm.com/sns/rich.htm
>
>"Two roads diverged in a wood, and I -
>I took the one less traveled by, and that has made all the difference.",
>Frost
>
>
>Ian Jacobs <ij@w3.org> on 03/03/2000 09:57:00 AM
>
>To:   Jon Gunderson <jongund@ux1.cso.uiuc.edu>
>cc:   w3c-wai-ua@w3.org
>Subject:  Re: Suggested note to Checkpoint 5.5 on timeliness
>
>
>
>
>Jon Gunderson wrote:
>>
>> Note to checkpoint 5.5: This checkpoint is designed to promote the use of
>> APIs which provide efficient exchange of information between user agents
>> and assistive technologies.  Notably in multi-tasking operating systems
>> this requires the ability to access the DOM and other Accessibility APIs
>in
>> process.  In process communication eliminates the time delays which occur
>> with out-of-process communication between applications.  The time delays
>> can result in slower response to user actions or potentially the user
>> missing important information.
>
>I object. This says "requires", which I don't think we agreed to.
>I though we agreed that in-process communication should be
>highlighted as a technique. I propose the following edit:
>
><PROPOSED>
>This checkpoint is designed to reduce delays that an assistive
>technology user might experience due to communication overhead.
>Timely exchange is import for preventing loss of information,
>a risk when changes in content occur faster than the
>exchange with the assistive technology. One effective technique
>for providing timely access is to allow assistive technologies to run
>in the same process space as the user agent, thus eliminating
>inter-application communication delays.
></PROPOSED>
>
> - Ian
>--
>Ian Jacobs (jacobs@w3.org)   http://www.w3.org/People/Jacobs
>Tel/Fax:                     +1 212 684-1814 or 212 532-4767
>Cell:                        +1 917 450-8783
>
>
>

Jon Gunderson, Ph.D., ATP
Coordinator of Assistive Communication and Information Technology
Chair, W3C WAI User Agent Working Group
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 Monday, 6 March 2000 09:47:38 GMT

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