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# init(from:)

Loads a configuration catalog from a USD or reality file.

```
init(from url: URL) async throws
```

## Parameters

`url`

A URL of a USD or `.reality` file.

## Discussion

This method parses a USD or `.reality` file, and provides a collection of available
configurations based on USD variant sets or `.reality` file configurations. It doesn’t
load large asset files, such as textures and meshes.

You can load an entity, and its assets, with configuration choices by calling
[`init(from:configurations:)`](/documentation/RealityKit/Entity/init(from:configurations:)).

---

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