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# Text attributes for attributed strings

Apply attributes to text in an attributed string to convey extra information about the text.

## Topics

### Constants

  <doc://com.apple.documentation/documentation/Foundation/NSAttributedString/Key/accessibilityTextCustom>

  <doc://com.apple.documentation/documentation/Foundation/NSAttributedString/Key/accessibilityTextHeadingLevel>

  <doc://com.apple.documentation/documentation/Foundation/NSAttributedString/Key/UIAccessibilityTextAttributeContext>

### Constants

[`UIAccessibilityTextAttributeCustom`](/documentation/UIKit/UIAccessibilityTextAttributeCustom)

A key for specifying custom attributes to apply to the text.

[`UIAccessibilityTextAttributeHeadingLevel`](/documentation/UIKit/UIAccessibilityTextAttributeHeadingLevel)

A key for specifying the heading level of the text.

[`UIAccessibilityTextAttributeContext`](/documentation/UIKit/UIAccessibilityTextAttributeContext)


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