# init(newDocument:editor:) Creates a document group that is able to create and edit reference file documents. ``` @preconcurrency nonisolated init(newDocument: @escaping @Sendable () -> Document, @ContentBuilder editor: @escaping (ReferenceFileDocumentConfiguration) -> Content) ``` ## Parameters `newDocument` The initial document used when the user creates a new document. The argument should create a new instance, such that a new document is created on each invocation of the closure. `editor` The editing UI for the provided document. ## Discussion The current document for a given editor instance is also provided as an environment object for its subhierarchy. Undo support is not automatically provided for this construction of a `DocumentGroup`, and any updates to the document by the editor view hierarchy are expected to register undo operations when appropriate. --- 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)