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UAAG2 action-725 Write IER for the new 1.2.2 Repair Missing Structure

From: Richards, Jan <jrichards@ocadu.ca>
Date: Thu, 2 Aug 2012 16:23:54 +0000
To: "w3c-wai-ua@w3.org" <w3c-wai-ua@w3.org>
Message-ID: <0B1EB1C972BCB740B522ACBCD5F48DEB03AC9EC7@ocadmail-maildb.ocad.ca>
Intent of Success Criterion 1.2.2:
When an author has neglected to provide labels and/or headers as necessary for accessibility, the user agent can, in some cases, use heuristics to determine potential labels and/or headers from presentation attributes. Once potential headings and/or labels have been identified, the user agent can proceed (e.g. with communication via platform accessibility services) as if the relationship was defined in the markup. The user must have the option to specify whether the heuristics should be applied because some users will need to experience the content as the author provided it, for example to perform evaluations. 

    Examples of Success Criterion 1.2.2:
- content markup includes a checkbox without a specified label, but the user agent detects that a static text component is positioned immediately to the right of the checkbox and no other static text components are nearby. The nearby text is treated as the label.
- content markup includes a table with no header row. The user agent detects that top row contains textual entries while the other rows contain numeric entries. The top row of the table is treated as table headers.
- content markup (in English) includes instances of static text that differ from surrounding text due to being styled sentence fragments and being styled with  a larger font, bold weight and additional spacing. The instances are treated as headings.

    Related Resources for Success Criterion 1.2.2:
- Understanding WCAG 2.0: Heading and Labels:  http://www.w3.org/TR/2012/NOTE-UNDERSTANDING-WCAG20-20120103/navigation-mechanisms-descriptive.html

SC: For reference:

1.2.2 Repair Missing Structure:
The user can specify whether or not the user agent should attempt to insert the following types of structural markup on the basis of author-specified presentation attributes (i.e. position and appearance): (Level AAA) 
    (a) Labels
    (b) Headers (i.e. heading markup, table headers)


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Received on Thursday, 2 August 2012 16:24:22 UTC

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