By clicking the buttons 
undo or 
redo in the toolbar you can undo the last operation or redo an undone operation. Alternatively, you can use the keyboard shortcuts Shift+Ctrl+Z for undo and Shift+Ctrl+Y for redo. Undo and redo are availbale for the following operations:
- Positioning of objects
- Aligning of objects
- Removing objects from the graphic
- Adding an outline
- Editing an outline
Undo and redo for operations on outlines is only possible after saving the outline.
If you perform multiple undo operations, multiple redo operations are available.
If you close the graphic, undo and redo is reset.