<!--
{
  "availability" : [
    "iOS: 3.2.0 -",
    "iPadOS: 3.2.0 -",
    "macCatalyst: 13.1.0 -",
    "macOS: 10.5.0 -",
    "tvOS: 9.0.0 -",
    "visionOS: 1.0.0 -",
    "watchOS: 2.0.0 -"
  ],
  "documentType" : "symbol",
  "framework" : "CoreText",
  "identifier" : "/documentation/CoreText/kCTFontFeatureSettingsAttribute",
  "metadataVersion" : "0.1.0",
  "role" : "Global Variable",
  "symbol" : {
    "kind" : "Global Variable",
    "modules" : [
      "Core Text"
    ],
    "preciseIdentifier" : "c:@kCTFontFeatureSettingsAttribute"
  },
  "title" : "kCTFontFeatureSettingsAttribute"
}
-->

# kCTFontFeatureSettingsAttribute

The font features settings for a font reference.

```
let kCTFontFeatureSettingsAttribute: CFString
```

## Discussion

The value associated with this key is a <doc://com.apple.documentation/documentation/CoreFoundation/CFArray> object containing font feature-setting dictionaries. A feature-setting dictionary contains a tuple of a [`kCTFontFeatureTypeIdentifierKey`](/documentation/CoreText/kCTFontFeatureTypeIdentifierKey) key-value pair and a [`kCTFontFeatureSelectorIdentifierKey`](/documentation/CoreText/kCTFontFeatureSelectorIdentifierKey) key-value pair. Each setting dictionary indicates which setting should be turned on.

> Note:
> In the case of duplicate or conflicting settings, the last setting in the list takes precedence. It is the caller’s responsibility to handle exclusive and nonexclusive settings as necessary.

---

Copyright &copy; 2026 Apple Inc. All rights reserved. | [Terms of Use](https://www.apple.com/legal/internet-services/terms/site.html) | [Privacy Policy](https://www.apple.com/privacy/privacy-policy)