Describes Web Content Accessibility Guidelines (WCAG) 2 supporting documents and supplemental guidance.| Web Accessibility Initiative (WAI)
Accessibility resources free online from the international standards organization: W3C Web Accessibility Initiative (WAI).| Web Accessibility Initiative (WAI)
Understanding Test Rules for WCAG 2 Success Criteria| www.w3.org
Understanding Techniques for WCAG 2.2 Success Criteria| www.w3.org