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# NSLayoutManager.TypesetterBehavior

Constants that determine the layout manager’s behavior during layout.

```
enum TypesetterBehavior
```

## Overview

These constants define the behavior of `NSLayoutManager` and `NSTypesetter` when laying out lines. They are used by [`typesetterBehavior`](/documentation/AppKit/NSLayoutManager/typesetterBehavior-swift.property) to control the compatibility level of the typesetter.

## Topics

### Behaviors

[`NSLayoutManager.TypesetterBehavior.latestBehavior`](/documentation/AppKit/NSLayoutManager/TypesetterBehavior-swift.enum/latestBehavior)

The current typesetter behavior in the current operating system.

[`NSLayoutManager.TypesetterBehavior.originalBehavior`](/documentation/AppKit/NSLayoutManager/TypesetterBehavior-swift.enum/originalBehavior)

The original typesetter behavior, as shipped with macOS 10.1 and earlier.

[`NSLayoutManager.TypesetterBehavior.behavior_10_2_WithCompatibility`](/documentation/AppKit/NSLayoutManager/TypesetterBehavior-swift.enum/behavior_10_2_WithCompatibility)

The macOS 10.2 typesetting behavior that is still compatible with the original typesetter behavior.

[`NSLayoutManager.TypesetterBehavior.behavior_10_2`](/documentation/AppKit/NSLayoutManager/TypesetterBehavior-swift.enum/behavior_10_2)

The typesetter behavior introduced in macOS 10.2.

[`NSLayoutManager.TypesetterBehavior.behavior_10_3`](/documentation/AppKit/NSLayoutManager/TypesetterBehavior-swift.enum/behavior_10_3)

The typesetter behavior introduced in macOS 10.3.

[`NSLayoutManager.TypesetterBehavior.behavior_10_4`](/documentation/AppKit/NSLayoutManager/TypesetterBehavior-swift.enum/behavior_10_4)

The typesetter behavior introduced in macOS 10.4.


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