Web Accessibility

  1. Principle 4: Robust
    1. Guideline 4.1: Compatible Content
      1. Parsing Requirements
        1. Valid HTML Structure
          1. Proper Element Nesting
            1. Unique Attribute Values
            2. Name, Role, Value
              1. Component Names
                1. Component Roles
                  1. Component Values
                    1. Component States
                    2. Status Messages
                      1. Status Message Identification
                        1. Programmatic Determination
                          1. Assistive Technology Communication

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                      6. Principle 3: Understandable

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                      8. Accessible Rich Internet Applications (ARIA)