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# NSLayoutManager.ControlCharacterAction

Constants that describe actions for control characters.

```
struct ControlCharacterAction
```

## Overview

These constants [`layoutManager(_:shouldUse:forControlCharacterAt:)`](/documentation/AppKit/NSLayoutManagerDelegate/layoutManager(_:shouldUse:forControlCharacterAt:)) delegate method uses.

## Topics

### Actions

[`containerBreak`](/documentation/AppKit/NSLayoutManager/ControlCharacterAction/containerBreak)

An action that triggers a break in layout for the current container.

[`horizontalTab`](/documentation/AppKit/NSLayoutManager/ControlCharacterAction/horizontalTab)

An action that inserts a horizontal tab.

[`lineBreak`](/documentation/AppKit/NSLayoutManager/ControlCharacterAction/lineBreak)

An action that causes a line break.

[`paragraphBreak`](/documentation/AppKit/NSLayoutManager/ControlCharacterAction/paragraphBreak)

An action that causes a paragraph break.

[`whitespace`](/documentation/AppKit/NSLayoutManager/ControlCharacterAction/whitespace)

An action that adds whitespace.

[`zeroAdvancement`](/documentation/AppKit/NSLayoutManager/ControlCharacterAction/zeroAdvancement)

An action that removes the glyph from layout.

### Initializers

[`init(rawValue:)`](/documentation/AppKit/NSLayoutManager/ControlCharacterAction/init(rawValue:))

Creates a new control character action with the specified raw value.


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