On the Mac, you can always hit Command-Z to undo something. You can also hit Command-Shift-Z to redo something and put it back to what it was before you hit undo. Make sense? This isn’t so easily done ...

While there are plenty of options out there, Apple's built-in Notes app continues to be a useful way to, well, jot down and keep track of notes. Random thoughts that pop-up throughout your day, ...