---
title: kCTFrameProgressionAttributeName
framework: coretext
role: symbol
role_heading: Global Variable
path: coretext/kctframeprogressionattributename
---

# kCTFrameProgressionAttributeName

Specifies progression for a frame.

## Declaration

```swift
let kCTFrameProgressionAttributeName: CFString
```

## Discussion

Discussion A CFNumber object containing a CTFrameProgression constant. The default is kCTFrameProgressionTopToBottom. This value determines the line-stacking behavior for a frame and does not affect the appearance of the glyphs within that frame.

## See Also

### Constants

- [CTFrameProgression](coretext/ctframeprogression.md)
- [kCTFramePathFillRuleAttributeName](coretext/kctframepathfillruleattributename.md)
- [kCTFramePathWidthAttributeName](coretext/kctframepathwidthattributename.md)
- [kCTFrameClippingPathsAttributeName](coretext/kctframeclippingpathsattributename.md)
- [kCTFramePathClippingPathAttributeName](coretext/kctframepathclippingpathattributename.md)