Undo/Redo
The undo/redo toolbar is shown below:

| Undo icon | Clicking this icon undoes the most recent action. Hover the mouse over the icon to obtain a description of the action to be undone. | 
| Undo dropdown | Shows a list of all available undoable actions. This supports undoing all actions to a selected point. | 
| Redo icon | Clicking this icon redoes the most recent action. Hover the mouse over the icon to obtain a description of the action to be redone. | 
| Redo dropdown | Shows a list of
  all available redoable actions. This supports redoing all actions to a
  selected point. |