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Documentation / Mathematica / Front End / Menu Commands / File Menu /

Revert

FilledSmallSquare Revert restores the currently selected notebook to its last saved version.

FilledSmallSquare This command appears grayed out unless the notebook has been edited since it was last saved.

FilledSmallSquare If you choose this command, a dialog box appears saying that all unsaved changes will be lost and giving you the option of cancelling the operation.