---
title: "openHelpAnchor(_:inBook:)"
framework: appkit
role: symbol
role_heading: Instance Method
path: "appkit/nshelpmanager/openhelpanchor(_:inbook:)"
---

# openHelpAnchor(_:inBook:)

Finds and displays the text at the given anchor location in the given book.

## Declaration

```swift
func openHelpAnchor(_ anchor: NSHelpManager.AnchorName, inBook book: NSHelpManager.BookName?)
```

## Parameters

- `anchor`: Location of the desired text.
- `book`: Help book containing the anchor. When nil, all installed help books are searched.

## Discussion

Discussion To open an anchor in your bundle’s localized help book, you could use code similar to the following: NSString *locBookName = [[NSBundle mainBundle] objectForInfoDictionaryKey: @"CFBundleHelpBookName"]; [[NSHelpManager sharedHelpManager] openHelpAnchor:@"anchor1"  inBook:locBookName]; This method is a wrapper for AHRegisterHelpBook (which is called only once to register the help book specified in the application’s main bundle) and AHLookupAnchor.

## See Also

### Displaying Help

- [find(_:inBook:)](appkit/nshelpmanager/find(_:inbook:).md)
- [NSHelpManager.AnchorName](appkit/nshelpmanager/anchorname.md)
- [NSHelpManager.BookName](appkit/nshelpmanager/bookname.md)