In the Develop module, when editing, I sometimes make the mistake of pressing the wrong slash key and end up with the message No Photo Selected instead of the 'before' view that I wanted. If I have similar pictures, I find it hard to recover from this - when I go back to the Library module to try to track down my picture, it's been deselected, of course.
Thanks in advance - Helen
As soon as you realize you have pressed the wrong key you can press Cmd/Cntrl + Z.
This will undo what you just did, which is press the wrong key.
Simple but effective - thank you very much. I'm more used to Ctrl-Z undoing editing mistakes, not how you view the pictures.