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# Property Keys

These keys correspond to the extension item properties and are specified in the extension’s `Info.plist`.

## Topics

### Constants

[`let NSExtensionItemAttributedTitleKey: String`](/documentation/Foundation/NSExtensionItemAttributedTitleKey)

An optional title of the extension item.

[`let NSExtensionItemAttributedContentTextKey: String`](/documentation/Foundation/NSExtensionItemAttributedContentTextKey)

An optional string describing the extension item content.

[`let NSExtensionItemAttachmentsKey: String`](/documentation/Foundation/NSExtensionItemAttachmentsKey)

An optional array of media data associated with the extension item.


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