It is made by C runs the command dired-do-copy (found in dired-mode-map), which is an interactive autoloaded compiled Lisp function in ‘dired-aux.el’. I think it should also mention C-g, "to quit right away". Sure, "The user is supposed to know that." But, "He isn't sure it won't cause some damage, else if it were safe, it would be listed." emacs-version "26.3"