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Re: Editorial addition to the Techniques intro

From: Gregg Vanderheiden <gv@trace.wisc.edu>
Date: Sun, 20 Jun 2010 09:00:35 -0500
To: befree@magma.ca
Cc: w3c-wai-gl@w3.org, david100@symatico.ca
Message-id: <FEB79268-46C1-4F0D-8C9E-944C621429DC@trace.wisc.edu>
Good edits.

Where we say “sufficient techniques” we need to say “sufficient techniques or combination of techniques”. 

In a large number of cases it's only when you use a combination of techniques that it is considered sufficient. Each numbered line in the “how to meet” and “understanding” docs is sufficient. But the individual Techniques on that line are not sufficient by themselves unless they are on a numbered line by themselves.

This is somewhat subtle but it is important. It also helps get by the idea that techniques are themselves what you need to conform to.


Gregg
-----------------------
Gregg Vanderheiden Ph.D.
Director Trace R&D Center
Professor Industrial & Systems Engineering
and Biomedical Engineering
University of Wisconsin-Madison

On Jun 19, 2010, at 11:11 PM, David MacDonald wrote:

> As we get ready to republish the Techniques document, I’ve been looking at the introduction. There is a typo to fix and I think we should add a couple of  sentences
>  
> <add text>There are examples in each technique which sometimes contain code snips that are intended to demonstrate the principle discussed in the description of the technique. The code is not intended to demonstrate other aspects of accessibility, usability or best coding practises not related to the technique.</add text> 
>  
> Here’s a shot at it in context with a couple of other edits which are within <brackets></brackets>
>  
> Sufficient and Advisory Techniques
> Rather than having technology specific techniques in WCAG 2.0, the guidelines and success criteria themselves have been written in a technology neutral fashion. In order to provide guidance and examples for meeting the guidelines using specific technologies (for example HTML) the working group has identified sufficient techniques for each Success Criterion that are sufficient to meet that Success Criterion. The list of sufficient techniques is maintained in the "Understanding WCAG 2.0" (and mirrored in How to Meet WCAG 2.0). <remove>In this way</remove><add>By separating the WCAG 2 normative guidelines document from the techniques used to meet the Success Criteria in those guidelines</add> it is possible to update the list as new techniques are discovered, and as Web Technologies and Assistive Technologies progress.
> 
> Note that all techniques are informative. The "sufficient techniques" are considered sufficient by the WCAG Working Group to meet the success criteria. However, it is not necessary to use these particular techniques. If techniques are used other than those listed by the Working Group, then some other method for establishing the technique's ability to meet the success criteria would be needed<add period>. </add period>
> 
> <add text>There are examples in each technique which sometimes contain code snips that are intended to demonstrate the principle discussed in the description of the technique. The code is not intended to demonstrate other aspects of accessibility, usability or best coding practises not related to the technique.</add text>
> 
> Most success criteria have multiple sufficient techniques listed. Any of the listed sufficient techniques can be used to meet the Success Criterion. There may be other techniques which are not documented by the working group that could also meet the Success Criterion. As new sufficient techniques are identified they will be added to the listing.
> 
> In addition to the sufficient techniques, there are a number of advisory techniques that can enhance accessibility, but did not qualify as sufficient techniques because are not sufficient to meet the full requirements of the success criteria, they are not testable, and/or are good and effective techniques in some circumstances but not effective or helpful in others. These are listed as advisory techniques and are right below the sufficient techniques. Authors are encouraged to use these techniques wherever appropriate to increase accessibility of their Web pages.
> 
> 
Received on Sunday, 20 June 2010 14:01:10 GMT

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