WCAG 2.0, first published in 2006, makes many updates to the original version,
but its doctrine will take time to filter down into government law.
WCAG 1.0
WCAG 1.0 was the cumulative effort of the web community to arrive at a few basic accessibility
guidelines. It is divided into three priority levels: Priority Level 1, Priority Level 2,
and Priority Level 3. These are cumulative, so satisfying Priority Level 2 will also satisfy
Level 1. In a flash of brilliant vernacular, the W3C decided to also add the term
Conformance Level as well??”Conformance Level A, Conformance Level Double-A, and
Conformance Level Triple-A. Amazingly, these conformance levels map to the priority
levels, so if your site meets all the requirements of Priority Level 1, you are actually meeting
Conformance Level A. Sound needlessly convoluted? It is.
WEB DESIGN AND MARKETING SOLUTIONS FOR BUSINESS WEBSITES
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5. www.w3.org
6. www.w3.org/WAI
According to the W3C, content authors ???must??? cover all items in Priority Level 1; doing
otherwise would jeopardize the very ability of certain groups to even access a website.
Furthermore, developers ???should??? satisfy Priority Level 2, and they ???may address??? Priority
Level 3.
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