---
title: settings
framework: appintents
role: symbol
role_heading: Instance Property
path: appintents/assistantschemas/booksentity/settings
---

# settings

The app entity describes settings for an audiobook or ebook.

## Declaration

```swift
var settings: some AssistantSchemas.Entity { get }
```

## Overview

Overview Use Swift macros that generate additional properties and add protocol conformance for your app entity implementation. The following example shows an app entity that conforms to the .books.settings schema: @AppEntity(schema: .books.settings) struct BookSettingsEntity: AppEntity {     struct Query: EntityStringQuery {         func entities(for identifiers: [BookSettingsEntity.ID]) async throws -> [BookSettingsEntity] { [] }         func entities(matching string: String) async throws -> [BookSettingsEntity] { [] }     }

static var defaultQuery = Query()     var displayRepresentation: DisplayRepresentation { "Book Settings" }

let id = UUID()

@Property     var font: BookFont

@Property     var fontSize: BookFontSize

@Property     var theme: BookTheme

@Property     var pageNavigationSetting: BookPageNavigationSetting

@Property     var isTextJustified: Bool

@Property     var isAllowMultipleColumns: Bool} For more information about the .books app intent domain, see doc:Making-ebook-actions-available-to-siri-and-apple-intelligence. For general information about app intent domains, see doc:Integrating-actions-with-siri-and-apple-intelligence.