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# NSRuleEditor.NestingMode

Specifies a type for nesting modes.

```
enum NestingMode
```

## Overview

See `Nesting Modes` for possible values.

## Topics

### Modes

[`NSRuleEditorNestingModeCompound`](/documentation/AppKit/NSRuleEditor/NestingMode-swift.enum/compound)

Unlimited nesting and compound rows.

[`NSRuleEditorNestingModeList`](/documentation/AppKit/NSRuleEditor/NestingMode-swift.enum/list)

Allows a single list, with no nesting and no compound rows.

[`NSRuleEditorNestingModeSimple`](/documentation/AppKit/NSRuleEditor/NestingMode-swift.enum/simple)

One compound row at the top with subrows beneath it, and no further nesting allowed.

[`NSRuleEditorNestingModeSingle`](/documentation/AppKit/NSRuleEditor/NestingMode-swift.enum/single)

Only a single row is allowed.

## Relationships

### Conforms To

[`Sendable`](/documentation/Swift/Sendable)

[`Equatable`](/documentation/Swift/Equatable)

[`BitwiseCopyable`](/documentation/Swift/BitwiseCopyable)

[`RawRepresentable`](/documentation/Swift/RawRepresentable)

[`SendableMetatype`](/documentation/Swift/SendableMetatype)

[`Hashable`](/documentation/Swift/Hashable)

---

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