# Preview(_:traits:arguments:body:) Creates a group of previews of an NSView. ``` @freestanding(declaration) macro Preview(_ name: String? = nil, traits: PreviewTrait..., arguments: [T], @PreviewBodyBuilder body: @escaping @MainActor (T) -> NSView) ``` ## Parameters `name` An optional display name for the preview. `traits` An optional list of traits to customize the preview. `arguments` An array of arguments to pass into `body`. `body` A closure that maps an argument to an NSView to preview. --- 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)