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# init(scene:)

Creates a new system.

```
@MainActor @preconcurrency init(scene: Scene)
```

## Parameters

`scene`

The scene this system affects.

## Discussion

There’s no need to instantiate your own systems, so don’t call this method.
Instead, register your system with RealityKit by calling
[`registerSystem()`](/documentation/RealityKit/System/registerSystem()).
RealityKit automatically creates an instance of every
registered system for every scene.

---

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