---
title: AppSchema.BooksEnum
framework: appintents
role: symbol
role_heading: Protocol
path: appintents/appschema/booksenum
---

# AppSchema.BooksEnum

Identifies enum schemas in the books domain.

## Declaration

```swift
protocol BooksEnum : AppSchema.Kind
```

## Topics

### Instance Properties

- [contentType](appintents/appschema/booksenum/contenttype.md)
- [font](appintents/appschema/booksenum/font.md)
- [fontSize](appintents/appschema/booksenum/fontsize.md)
- [navigationDirection](appintents/appschema/booksenum/navigationdirection.md)
- [pageNavigationSetting](appintents/appschema/booksenum/pagenavigationsetting.md)
- [relativeCharacterSpacingChange](appintents/appschema/booksenum/relativecharacterspacingchange.md)
- [relativeFontChange](appintents/appschema/booksenum/relativefontchange.md)
- [relativeLineSpacingChange](appintents/appschema/booksenum/relativelinespacingchange.md)
- [relativeWordSpacingChange](appintents/appschema/booksenum/relativewordspacingchange.md)
- [theme](appintents/appschema/booksenum/theme.md)

## Relationships

### Inherits From

- [AppSchema.Kind](appintents/appschema/kind.md)

### Conforming Types

- [AppSchema.Enum](appintents/appschema/enum.md)

## See Also

### Types for static parameters

- [contentType](appintents/appschema/booksenum/contenttype.md)
- [font](appintents/appschema/booksenum/font.md)
- [fontSize](appintents/appschema/booksenum/fontsize.md)
- [navigationDirection](appintents/appschema/booksenum/navigationdirection.md)
- [pageNavigationSetting](appintents/appschema/booksenum/pagenavigationsetting.md)
- [relativeCharacterSpacingChange](appintents/appschema/booksenum/relativecharacterspacingchange.md)
- [relativeFontChange](appintents/appschema/booksenum/relativefontchange.md)
- [relativeLineSpacingChange](appintents/appschema/booksenum/relativelinespacingchange.md)
- [relativeWordSpacingChange](appintents/appschema/booksenum/relativewordspacingchange.md)
- [theme](appintents/appschema/booksenum/theme.md)