Systems and methods are provided for storing and restoring digital data. In some implementations, a method is provided. The method includes displaying a current view, initiating a history view, the history view including two or more visual representations of corresponding earlier versions of the current view, identifying a selection of an item in a visual representation, receiving an input to delete the selected item, and deleting each instance of the selected item in the history view. Other embodiments of this aspect include corresponding systems, apparatus, computer program products, and computer readable media.