Authoring tool interface features that fail to meet the success criteria of the checkpoints of Guideline 1.

Web content that fails to meet the requirements of the Web Content Accessibility Guidelines (WCAG) [ WCAG-REFS].

(Also: Inaccessible Markup) Inaccessible Web content or authoring tools cannot be used by some people with disabilities. The Web Content Accessibility Guidelines 1.0 [WCAG10] describes how to create accessible Web content.