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 ...

Undo is one of the simplest and most common tasks you can perform in most programs, but traditionally, it has always worked a little bit differently in Photoshop. That changed with Photoshop CC 2019, ...