---
title: "showHelp(_:)"
framework: appkit
role: symbol
role_heading: Instance Method
path: "appkit/nsapplication/showhelp(_:)"
---

# showHelp(_:)

If your project is properly registered, and the necessary keys have been set in the property list, this method launches Help Viewer and displays the first page of your app’s help book.

## Declaration

```swift
func showHelp(_ sender: Any?)
```

## Parameters

- `sender`: The object that sent the command.

## Discussion

Discussion For information on how to set up your project to take advantage of having Help Viewer display your help book, see Specifying the Comprehensive Help File.

## See Also

### Providing help information

- [registerUserInterfaceItemSearchHandler(_:)](appkit/nsapplication/registeruserinterfaceitemsearchhandler(_:).md)
- [searchString(_:inUserInterfaceItemString:range:found:)](appkit/nsapplication/searchstring(_:inuserinterfaceitemstring:range:found:).md)
- [unregisterUserInterfaceItemSearchHandler(_:)](appkit/nsapplication/unregisteruserinterfaceitemsearchhandler(_:).md)
- [activateContextHelpMode(_:)](appkit/nsapplication/activatecontexthelpmode(_:).md)
- [helpMenu](appkit/nsapplication/helpmenu.md)