#Emacs undo limited to the active region is a super power. Just like regular undo, but only applies to the selected area. e.g., undo changes in this paragraph/page/function etc., leaving the rest of the file untouched.
And the best part is it just works - highlight the region, undo (& keep undoing, as needed).
Saved me a lot of grief today!
@plantarum 🤯