- From: Wendy Chisholm <wendy@w3.org>
- Date: Tue, 05 Apr 2005 22:12:42 -0400
- To: wai-gl <w3c-wai-gl@w3.org>
- Cc: Ben Caldwell <caldwell@trace.wisc.edu>
- Message-ID: <4253459A.1020102@w3.org>
At last week's telecon [1] there were several ideas that seemed to resonate with everyone. Ben and I took them as "requirements" for our work on conformance claims. A summary: 1. Conformance claims should be based on technology not user agent(s). 2. Technology name and version is required; user agent information is optional. 3. The claim should be simple to make. Providing a template or examples of common "profiles" would aid simplicity. Common "profiles" or "baselines" could be documented and referenced in claims. 4. Audience information could be included in a claim. 5. Include enough information in the conformance claim such that a 3rd party can verify the claim. [We conclude this means that some technique-related information must be provided, although we didn't sketch out how this would work. We hope to discuss this on Thursday.] 6. Conformance claims may include other optional assumptions. [1] <http://www.w3.org/2005/03/31-wai-wcag-minutes.html#item06> Here is a potential "template" based on the "Conformance profiles" in UAAG 1.0 <http://www.w3.org/TR/UAAG10/conformance.html#conformance-profiles> A conformance claim includes the following assertions: 1. Required: The date of the claim. 2. Required: The guidelines title/version: "Web Content Accessibility Guidelines 2.0" 3. Required: The URI of the guidelines: http://www.w3.org/TR/2005/REC-WCAG20-YYYYMMDD/ 4. Required: The conformance level satisfied: "A", "AA", or "AAA" (or 1, 2, or 3??) 5. Required: A list of the specifications used to create the content for which the claim is being made. This includes markup languages, style sheet languages, scripting/programming languages, image formats, and multimedia formats. 6. Required: For each specification, indication if the technology is "used" or "relied upon" (i.e., if used - the content is usable if that technology is turned off or not supported. if relied upon - the content is not usable if that technology is turned off or not supported) 7. Required: Scope of the claim (a uri, list of uris or a regular expression) 8. Optional: A list of user agents that the content has been tested on. This should include assistive technologies. 9. Optional: Information about audience assumptions or target audience. This could include language, geographic information, interests or ??? Examples of conformance claims Example 1: On 13 March 2005, johnpointer.com conforms to W3C's WCAG 2.0. Conformance Level A. The specification that this content *relies upon* is: XHTML 1.0. The specifications that this content *uses *are: CSS2, Real Video, Real Audio, MP3, and gif. This content was tested using the following user agents and assistive technologies: Firefox 1.01 (windows, linux), IE 3.0 and 6.0 (windows, mac), Jaws 3.7 and Jaws 6.0 (windows), Safari 1.2 (Mac), Opera 7.5 (OSX). Example 2: On 1 January 2005, "S5: An Introduction" <http://meyerweb.com/eric/tools/s5/s5-intro.html> conforms to W3C's WCAG 2.0. Conformance Level A. The specification that this content *relies upon* is: XHTML 1.0 (Strict). The specifications that this content *uses *are: JavaScript 1.2, CSS2, png, and jpg. Example 3: On 1 January 2005, "Photo gallery application" <http://foo.makeyourownslideshow.com> conforms to W3C's WCAG 2.0. Conformance Level A. The specifications that this content *relies upon* are: XHTML 1.0 (Strict), CSS2, JavaScript 1.2, jpg. The specification that this content *uses *is: gif. The techniques profile that this site uses is, "HTML/ECMAScript for latest browsers." [Note: This techniques profile is not defined, but it was something that we had talked about. See "Questions and issues" that follow.] Questions and issues: During last week's discussion and per proposals on the mailing list there is a potential requirement that "technologies should meet minimum conditions" (ala Jason's proposal at [2]). However, as part of techniques we would need to clearly indicate "repair techniques" and perhaps build a mapping (or a list) of techniques that we recommend for a suggested baseline. For example: for a baseline aimed at a wide audience we recommend avoiding accesskey since it is not widely supported by browsers and assistive technologies. [2] <http://lists.w3.org/Archives/Public/w3c-wai-gl/2005JanMar/0679.html> Thoughts? Questions? Issues? Best, --wendy -- wendy a chisholm world wide web consortium web accessibility initiative http://www.w3.org/WAI/ /--
Received on Wednesday, 6 April 2005 02:12:53 UTC