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the undo command is one of the most important functions available it allows you to reverse the last command that you performed the drop- down arrow next to the undo button in the quick access toolbar contains a list of the last few actions you have performed you may reverse anything that is on this list however you must reverse them in the order that they were executed meaning that if you wanted to undo an action that you did five actions ago you must undo the four actions that followed it if you hold your mouse pointer over the undo command a little screen tip will appear to tell you which action you would be undoing by clicking it note that some actions you perform cannot be undone for instance closing the workbook without saving any changes that you meant to save would be an excellent example of an irreversible mistake
