---
title: UILetterformAwareSizingRule
framework: uikit
role: symbol
role_heading: Enumeration
path: uikit/uiletterformawaresizingrule
---

# UILetterformAwareSizingRule

Constants that specify typographic bounds-sizing behavior to handle text in fonts with oversize characters.

## Declaration

```swift
enum UILetterformAwareSizingRule
```

## Overview

Overview For more information on typographic bounds sizing behavior, see UILetterformAwareAdjusting.

## Topics

### Setting bounds-sizing behavior

- [UILetterformAwareSizingRule.oversize](uikit/uiletterformawaresizingrule/oversize.md)
- [UILetterformAwareSizingRule.typographic](uikit/uiletterformawaresizingrule/typographic.md)

### Initializers

- [init(rawValue:)](uikit/uiletterformawaresizingrule/init(rawvalue:).md)

## Relationships

### Conforms To

- [BitwiseCopyable](swift/bitwisecopyable.md)
- [Equatable](swift/equatable.md)
- [Hashable](swift/hashable.md)
- [RawRepresentable](swift/rawrepresentable.md)
- [Sendable](swift/sendable.md)
- [SendableMetatype](swift/sendablemetatype.md)

## See Also

### Specifying text-sizing behavior

- [sizingRule](uikit/uiletterformawareadjusting/sizingrule.md)