Many of us have come to rely on the Ctrl+Z (Windows) or Cmd+Z (macOS) undo shortcuts to get us out of trouble when a key tap accidentally wipes out three hours of writing or a misplaced click has suddenly turned a photo entirely green.

But if you need to retrace more of your steps over a longer period of time, you've also got options. This feature is technically known as file versioning, and it keeps old versions of files available should you ever want to go back to them. This can be particularly useful if, for example, you suddenly realize you've been inputting the wrong figures into a spreadsheet for the past week.