The Undo History window provides a visual way of navigating through your undo history, or undoing or redoing multiple actions in the Editor at once.
To open the Undo History window, click the Undo icon (), or choose Edit > Undo History.
Select an entry in the Undo History window to revert your project back to that point automatically.
Once you have selected an action, redoable actions are indicated with a red line. Click any of the actions to add them back.
To change the order that actions are sorted in the Undo window, open the More Options (:) menu in the Undo History window and choose to show the latest action first or last.