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Re: Suggested note to Checkpoint 5.5 on timeliness

From: <schwer@us.ibm.com>
Date: Fri, 3 Mar 2000 13:00:57 -0600
To: Ian Jacobs <ij@w3.org>
cc: Jon Gunderson <jongund@ux1.cso.uiuc.edu>, w3c-wai-ua@w3.org
Message-ID: <85256897.0068F6D6.00@d54mta08.raleigh.ibm.com>



Ian, I think you are close but I like to still see a concrete example.

<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
Received on Friday, 3 March 2000 14:08:06 GMT

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