---
title: Font Feature Constants
framework: coretext
role: collectionGroup
role_heading: API Collection
path: coretext/font-feature-constants
---

# Font Feature Constants

These constants provide keys to font feature dictionary values.

## Topics

### Constants

- [kCTFontFeatureTypeIdentifierKey](coretext/kctfontfeaturetypeidentifierkey.md)
- [kCTFontFeatureTypeNameKey](coretext/kctfontfeaturetypenamekey.md)
- [kCTFontFeatureTypeExclusiveKey](coretext/kctfontfeaturetypeexclusivekey.md)
- [kCTFontFeatureTypeSelectorsKey](coretext/kctfontfeaturetypeselectorskey.md)
- [kCTFontFeatureSelectorIdentifierKey](coretext/kctfontfeatureselectoridentifierkey.md)
- [kCTFontFeatureSelectorNameKey](coretext/kctfontfeatureselectornamekey.md)
- [kCTFontFeatureSelectorDefaultKey](coretext/kctfontfeatureselectordefaultkey.md)
- [kCTFontFeatureSelectorSettingKey](coretext/kctfontfeatureselectorsettingkey.md)
- [kCTFontFeatureSampleTextKey](coretext/kctfontfeaturesampletextkey.md)
- [kCTFontFeatureTooltipTextKey](coretext/kctfontfeaturetooltiptextkey.md)

## See Also

### Global Variables

- [Name Specifier Constants](coretext/name-specifier-constants.md)
- [Font Variation Axis Dictionary Keys](coretext/font-variation-axis-dictionary-keys.md)