# `NSNotification.Name.GSUndoNotification`

*Type Property*

Posted after an undo or redo operation.

## Declaration

```swift
static let GSUndo: NSNotification.Name
```

```objc
extern NSNotificationName const GSUndoNotification;
```

```python
GSUndoNotification: NSNotificationName
```

## Discussion

The notification object is the document. The `text` entry in `userInfo` contains a localized description of the operation.