| Interface | Description | |
|---|---|---|
| IOperation | IOperation defines the interface for operations that can be undone and redone. | |
| IUndoManager | IUndoManager defines the interface for managing the undo and redo stacks. |
| Class | Description | |
|---|---|---|
| UndoManager | The UndoManager class manages the history of editing operations on a text flow so that these operations can be undone and redone. |