---
title: renderGroupID
framework: pencilkit
role: symbol
role_heading: Instance Property
path: pencilkit/pkstrokereference/rendergroupid
---

# renderGroupID

A UUID that groups strokes for wet-ink compositing with compatible inks such as marker.

## Declaration

```swift
var renderGroupID: UUID? { get }
```

## Discussion

Discussion Set this to the same value for a run of strokes to render them as if drawn while the previous stroke with the same ink was still wet.