# position The center of the volume in portal-local space, in meters. ``` var position: SIMD3 ``` ## Discussion Defaults to `.zero`, which places the box center at the portal entity’s origin. --- 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)