---
title: "registerBooks(in:)"
framework: appkit
role: symbol
role_heading: Instance Method
path: "appkit/nshelpmanager/registerbooks(in:)"
---

# registerBooks(in:)

Registers one or more help books in the given bundle.

## Declaration

```swift
func registerBooks(in bundle: Bundle) -> Bool
```

## Parameters

- `bundle`: The bundle for additional help books. Books in the main bundle are automatically registered.

## Return Value

Return Value true if registration is successful, false if the bundle doesn’t contain any help books or if registration fails.

## Discussion

Discussion You use registerBooksInBundle: to register help books in, for example, a plug-in bundle. The Info.plist in the bundle should contain a help book directory path, which specifies one or more folders containing help books. The main bundle is automatically registered by openHelpAnchor(_:inBook:) and find(_:inBook:).