---
title: NSView.DefinitionOptionKey
framework: appkit
role: symbol
role_heading: Structure
path: appkit/nsview/definitionoptionkey
---

# NSView.DefinitionOptionKey

Keys to include in your definition.

## Declaration

```swift
struct DefinitionOptionKey
```

## Topics

### Option Key

- [presentationType](appkit/nsview/definitionoptionkey/presentationtype.md)

### Initializers

- [init(rawValue:)](appkit/nsview/definitionoptionkey/init(rawvalue:).md)

## Relationships

### Conforms To

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

## See Also

### Displaying Definition Windows

- [showDefinition(for:at:)](appkit/nsview/showdefinition(for:at:).md)
- [showDefinition(for:range:options:baselineOriginProvider:)](appkit/nsview/showdefinition(for:range:options:baselineoriginprovider:).md)
- [NSView.DefinitionPresentationType](appkit/nsview/definitionpresentationtype.md)