---
title: USDPrim.PseudoRootSpec
framework: usdkit
role: symbol
role_heading: Structure
path: usdkit/usdprim/pseudorootspec
---

# USDPrim.PseudoRootSpec

A handle to a layer’s pseudo-root — the implicit parent of all top-level prims in a layer.

## Declaration

```swift
struct PseudoRootSpec
```

## Overview

Overview The pseudo-root is a special spec that’s automatically created by every layer. It’s not authored as a prim in the file, but it conceptually owns the top-level prims. It conforms to USDLayer.Spec.MetadataCollection and USDLayer.Spec.FieldCollection.

## Topics

### Initializers

- [init()](usdkit/usdprim/pseudorootspec/init().md)
- [init(_:)](usdkit/usdprim/pseudorootspec/init(_:).md)

## Relationships

### Conforms To

- [Copyable](swift/copyable.md)
- [Equatable](swift/equatable.md)
- [Escapable](swift/escapable.md)
- [USDLayer.Spec.FieldCollection](usdkit/usdlayer/spec/fieldcollection.md)
- [USDLayer.Spec.MetadataCollection](usdkit/usdlayer/spec/metadatacollection.md)

## See Also

### Working with scene-description specs

- [USDPrim.Spec](usdkit/usdprim/spec.md)