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+# 1.3.6 Identify Purpose
+
+- Level: AAA
+- Guideline: 1.3 Adaptable
+- Principle: 1 Perceivable
+
+## What it is
+
+In content implemented using markup languages, the purpose of user interface components, icons, and regions can be programmatically determined.
+
+## How to test
+
+- Check: In content implemented using markup languages, the purpose of user interface components, icons, and regions can be programmatically determined.
+- Use the sufficient techniques below as acceptable methods when applicable.
+
+## Sufficient techniques (W3C)
+
+- Programmatically indicating the purpose of icons, regions and user interface components
+- ARIA11: Using ARIA landmarks to identify regions of a page
+- Using microdata to markup user interface components (future link)
+
+## Advisory techniques (W3C)
+
+- Enabling user agents to find the version of the content that best fits their needs
+- Using semantics to identify important features (e.g., coga-simplification="simplest")
+- Using aria-invalid and aria-required
+
+## Resources
+
+- WCAG 2.2 SC: https://www.w3.org/TR/WCAG22/#identify-purpose
+- Understanding: https://www.w3.org/WAI/WCAG22/Understanding/identify-purpose.html
+- Quick reference: https://www.w3.org/WAI/WCAG22/quickref/?versions=2.2#identify-purpose
+
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