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A guide to understanding and implementing Web Content Accessibility Guidelines 2.0 is available at: Compliance to these criteria is measured in three levels: A, AA, or AAA. There are testable success criteria for each guideline. WCAG 2.0 contains 12 guidelines organized under 4 principles: Perceivable, Operable, Understandable, and Robust (POUR for short). This certifies it as a stable and referenceable technical standard.
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WCAG 2.0 is also an international standard, ISO 40500.
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This website adopts the Web Content Accessibility Guidelines (WCAG 2.0) as the accessibility standard for all its related web development and services.
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