---
title: OSLGetMarkTokenUPP
framework: coreservices
role: symbol
role_heading: Type Alias
path: coreservices/oslgetmarktokenupp
---

# OSLGetMarkTokenUPP

Defines a data type for the universal procedure pointer for the OSLGetMarkTokenProcPtr callback function pointer.

## Declaration

```swift
typealias OSLGetMarkTokenUPP = OSLGetMarkTokenProcPtr
```

## Discussion

Discussion For a description of a mark token callback function, see OSLGetMarkTokenProcPtr.