---
title: PortalComponent.BoundaryMode.crossingOnly
framework: realitykit
role: symbol
role_heading: Case
platforms: [iOS 27.0+, iPadOS 27.0+, Mac Catalyst 27.0+, macOS 27.0+, tvOS 27.0+, visionOS 27.0+]
path: realitykit/portalcomponent/boundarymode/crossingonly
---

# PortalComponent.BoundaryMode.crossingOnly

Entities with PortalCrossingComponent cross the boundary.

## Declaration

```swift
case crossingOnly
```

## Discussion

Discussion Portal world content isn’t clipped to the boundary.