---
title: kCTFontVariationAxisIdentifierKey
framework: coretext
role: symbol
role_heading: Global Variable
path: coretext/kctfontvariationaxisidentifierkey
---

# kCTFontVariationAxisIdentifierKey

Key to get the variation axis identifier.

## Declaration

```swift
let kCTFontVariationAxisIdentifierKey: CFString
```

## Discussion

Discussion Key to get the variation axis identifier value as a reference to a CFNumber object.

## See Also

### Constants

- [kCTFontVariationAxisMinimumValueKey](coretext/kctfontvariationaxisminimumvaluekey.md)
- [kCTFontVariationAxisMaximumValueKey](coretext/kctfontvariationaxismaximumvaluekey.md)
- [kCTFontVariationAxisDefaultValueKey](coretext/kctfontvariationaxisdefaultvaluekey.md)
- [kCTFontVariationAxisNameKey](coretext/kctfontvariationaxisnamekey.md)
- [kCTFontVariationAxisHiddenKey](coretext/kctfontvariationaxishiddenkey.md)