Mistakes happen—one misplaced key press and suddenly your 10,000 word essay has been reduced to a blinking cursor. Don’t panic though: Whether you need to undo a single action or roll back a whole week’s worth of misguided edits to the work presentation you’re preparing, here’s how to save the day in any popular application. We’re going to focus on undoing changes inside apps here, but you might also be able to recover old versions of files from disk, if you’ve got some sort of backup system in place—like File History in Windows or Time Machine on macOS. Cloud syncing services like Dropbox and Google Drive offer file version history too. We’ve written more about your various backup options here. Ctrl+Z (or Cmd+Z) We’re not sure exactly what percentage of the world’s computer users know this, but just in case you don’t, a tap on Ctrl+Z (in Windows) or Cmd+Z (on a Mac) is the universal digital lifesaver keyboard shortcut. It will undo your most recent action in just about every application out there. If you do suddenly wipe an entire essay or cut out the wrong person from a photograph, this keyboard shortcut will wave a magic wand and make it as if your mistake never happened. If you keep pressing Ctrl+Z (or Cmd+Z) then your actions will be undone, one at a time, in reverse chronological order—though most apps will have a limit in the interests of saving memory. It’s a basic tool, but it works, most of… [Read full story]
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