The Web Content Accessibility Guidelines 2.0 builds upon the foundation of WCAG 1.0, but also introduces some significant changes worth discussing. On a practical level, some of the changes in WCAG 2.0 are subtle. For example, forms still require labels, data tables still require headers, and images still require alternative text. Web developers who currently design accessible web sites will not have to change their habits much. On the other hand, WCAG 2.0 represents a substantial shift in philosophy. The significant changes involve making the guidelines principle-centered rather than technique-centered. This allows the guidelines to be relevant even as technology changes. Additionally, they are designed so that conformance can be reliably verified. While measuring true conformance can be difficult, the guidelines are structured to allow less interpretation of what true conformance means.
The standards in the following link are excerpted from Section 508 of the Rehabilitation Act, §1194.22. The pass/fail criteria in this document represent an interpretation of Section 508 web standards. This checklist is NOT official Section 508 documentation.
For the full text of Section 508, please see the official government 508 web site.