RE: Moving Issues 62, 63, 71 to the conformance section

This is interesting. I don’t think screen size is the right concept to use for purposes of of the clarification that we need. Also, this proposal doesn’t actually clarify the application of the “accessibility-supported” requirement by asserting the relevant set of user agents and assistive technologies that need to be compatible with the ways of using technologies relied on to meet the success criteria. I appreciate its simplicity, however.

From: David MacDonald [mailto:david@can-adapt.com]
Sent: Thursday, July 13, 2017 4:39 PM
To: White, Jason J <jjwhite@ets.org>
Cc: WCAG <w3c-wai-gl@w3.org>
Subject: Re: Moving Issues 62, 63, 71 to the conformance section

Here's another option which might be easier:

***

"If components change form based on screen size, they remain programmatically determinable and keyboard operable."

***

It would be placed after the last paragraph in the section "Understanding Requirement 2" just before the Notes at the end of the section. https://www.w3.org/TR/UNDERSTANDING-WCAG20/conformance.html#uc-conformance-requirements-head<https://na01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fwww.w3.org%2FTR%2FUNDERSTANDING-WCAG20%2Fconformance.html%23uc-conformance-requirements-head&data=02%7C01%7Cjjwhite%40ets.org%7Cc5e18b0d103d4893abe408d4ca2f3ddf%7C0ba6e9b760b34fae92f37e6ddd9e9b65%7C0%7C0%7C636355751636405902&sdata=OzSa6RsINaMaOkGRz5hP6NJHqSU8BoO86HE7OGWPrVw%3D&reserved=0>

Cheers,
David MacDonald



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On Wed, Jul 12, 2017 at 12:50 PM, White, Jason J <jjwhite@ets.org<mailto:jjwhite@ets.org>> wrote:
Thanks, David – see further comments below.

From: David MacDonald [mailto:david@can-adapt.com<mailto:david@can-adapt.com>]
I like your second condition, adding an "AND" for different AT in those environments.

 Regarding the first condition, Gregg expressed concern regarding using broad strokes for the customized view. He suggested we limit it to "size". He was nervous that there might be customized delivery of content such information spoken in a car etc, that by its very nature could not meet the conformance language and inhibit adoption of the standard.
[Jason] I would like to see good examples of this that would meet both of my conditions and which would raise difficulties.

So if I was to take your proposal and adjust it to size, it would look something like this.

If (1) the content includes features that adapt its presentation or functionality based on screen sizes in specific hardware or software environments, and (2) different user agents or assistive technologies are in use in each of these respective environments, then the ways in which technologies are relied upon to satisfy the success criteria are only accessibility-supported if they are compatible with user agents and assistive technologies in each of the environments for which adaptations are provided.

However, arguing against myself, your proposal  does limit the scope to environments with different AT. If there is no AT for that environment, then maybe your language is OK.
[Jason] Yes, I’m in favor of mentioning screen size, if at all, only as an example. Both of the conditions do need to be met for the proposal to apply, and it only clarifies (at most, expands) the nature of the compatibility guarantee.


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