# displayName(forType:) Returns the descriptive name for the specified document type, which is used in the File Format pop-up menu of the Save As dialog. ``` func displayName(forType typeName: String) -> String? ``` ## Parameters `typeName` The name of a document type, specified by `CFBundleTypeName` in the application’s `Info.plist` file. ## Return Value The descriptive name for the document type specified by `documentTypeName`. If there is no descriptive name, returns `documentTypeName`. ## Discussion For a document-based application, supported document types are specified in the `Info.plist` file by the `CFBundleDocumentTypes` array. Each document type is specified by a dictionary in this array, and is named by the `CFBundleTypeName` attribute. You can provide a descriptive, localized, representation of this name by providing a corresponding entry in the `InfoPlist.strings` file(s). For example, given an `Info.plist` file that contains the following fragment: ```objc CFBundleDocumentTypes CFBundleTypeName BinaryFile CFBundleTypeExtensions binary ``` you could provide a descriptive name by adding an entry in the `InfoPlist.strings` file: ```objc BinaryFile = "Binary file format"; ``` --- 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)