---
title: NSAnimationProgressMark Notification Key
framework: appkit
role: collectionGroup
role_heading: API Collection
path: appkit/nsanimationprogressmark-notification-key
---

# NSAnimationProgressMark Notification Key

This constant is returned in the userInfo dictionary of the progressMarkNotification notification.

## Topics

### Constants

- [progressMarkUserInfoKey](appkit/nsanimation/progressmarkuserinfokey.md)

## See Also

### Constants

- [NSAnimation.Curve](appkit/nsanimation/curve.md)
- [NSAnimation.BlockingMode](appkit/nsanimation/blockingmode.md)
- [NSAnimation.Progress](appkit/nsanimation/progress.md)