---
title: externalReference
framework: Compute Graph
role: symbol
role_heading: Type Property
platforms: [iOS 27.0+, iPadOS 27.0+, Mac Catalyst 27.0+, macOS 27.0+, tvOS 27.0+, visionOS 27.0+]
path: computegraph/computenodegraph/port/options/externalreference
---

# externalReference

The port references a value outside of the graph, such as by filename

## Declaration

```swift
static let externalReference: ComputeNodeGraph.Port.Options
```