# TN3108: Viewing the interface of your Swift code Learn how to navigate to the interface file of a Swift implementation file. ## Overview Xcode generates an interface file that includes all your source code’s internal and public declarations when using the Assistant editor, the Related Items, or the Navigate menu. ## Using the assistant editor 1. In the project navigator, select your implementation file. 2. Choose Editor > Assistant. The generated interface for your Swift code appears in the assistant editor on the right.  ## Using the Related Items button 1. In the project navigator, select your implementation file. 2. Click the Related Items icon in the [editor](https://help.apple.com/xcode/mac/current/#/dev79c94bf05)’s jump bar. 3. In the menu that appears, choose Counterparts > [Filename] to view your interface file.  Alternatively, choose Generated Interface > [Filename] from the menu. To navigate back to your implementation file, choose Original Source from the menu.  ## Using the Navigate menu In the project navigator, select your implementation file, then choose Navigate > Jump to Next Counterpart to view the interface file.  To navigate back to your implementation file, choose Navigate > Jump to Previous Counterpart or Navigate > Jump to Original Source [Filename].  ## Revision History - **2022-05-24** Made minor editorial changes. - **2022-02-08** Republished as TN3108 with significant editorial changes. - **2016-03-23** First published as QA1914. --- Copyright © 2026 Apple Inc. All rights reserved. | [Terms of Use](https://www.apple.com/legal/internet-services/terms/site.html) | [Privacy Policy](https://www.apple.com/privacy/privacy-policy)