- "Toggle Emacs Lock mode in the current buffer.
-
-With \\[universal-argument], ask for the locking mode to be used.
-With other prefix ARG, turn mode on if ARG is positive, off otherwise.
+ "Toggle Emacs Lock mode in the current buffer.
+If called with a plain prefix argument, ask for the locking mode
+to be used. With any other prefix ARG, turn mode on if ARG is
+positive, off otherwise. If called from Lisp, enable the mode if
+ARG is omitted or nil.