I use the "Before Only" option all the time to quickly compare my current edits and the original photo.
I would like to know if there is a way to toggle a single setting (like Exposure, or Contrast, or Clarity) to see my photo without this setting. This would be particularly useful after applying a preset, to see the effect of a single edit on the overall look (similar to "Before Only" or the on/off toggle on Tone Curves, Colors, etc.).
I tried with option/cmd/shift and other modifiers, but I don't know if it's possible at all.
Edit: I obviously know that I can undo/redo. I want to know if there's a quicker built-in way like a shortcut to toggle a single setting. ;)