---
title: kCTSuperscriptAttributeName
framework: coretext
role: symbol
role_heading: Global Variable
path: coretext/kctsuperscriptattributename
---

# kCTSuperscriptAttributeName

Controls vertical text positioning.

## Declaration

```swift
let kCTSuperscriptAttributeName: CFString
```

## Discussion

Discussion Value must be a CFNumber object. Default is integer value 0. If supported by the specified font, a value of 1 enables superscripting and a value of -1 enables subscripting.

## See Also

### Constants

- [kCTCharacterShapeAttributeName](coretext/kctcharactershapeattributename.md)
- [kCTFontAttributeName](coretext/kctfontattributename.md)
- [kCTKernAttributeName](coretext/kctkernattributename.md)
- [kCTLigatureAttributeName](coretext/kctligatureattributename.md)
- [kCTForegroundColorAttributeName](coretext/kctforegroundcolorattributename.md)
- [kCTForegroundColorFromContextAttributeName](coretext/kctforegroundcolorfromcontextattributename.md)
- [kCTParagraphStyleAttributeName](coretext/kctparagraphstyleattributename.md)
- [kCTStrokeWidthAttributeName](coretext/kctstrokewidthattributename.md)
- [kCTStrokeColorAttributeName](coretext/kctstrokecolorattributename.md)
- [kCTUnderlineColorAttributeName](coretext/kctunderlinecolorattributename.md)
- [kCTUnderlineStyleAttributeName](coretext/kctunderlinestyleattributename.md)
- [kCTVerticalFormsAttributeName](coretext/kctverticalformsattributename.md)
- [kCTGlyphInfoAttributeName](coretext/kctglyphinfoattributename.md)
- [kCTRunDelegateAttributeName](coretext/kctrundelegateattributename.md)
- [kCTBaselineOffsetAttributeName](coretext/kctbaselineoffsetattributename.md)