* lisp/files.el (copy-directory): PARENTS is no longer the last
argument.
A prefix arg makes KEEP-TIME non-nil.
-Noninteractively, the last argument PARENTS says whether to
-create parent directories if they don't exist. Interactively,
-this happens by default.
+Noninteractively, the PARENTS argument says whether to create
+parent directories if they don't exist. Interactively, this
+happens by default.
If NEWNAME is a directory name, copy DIRECTORY as a subdirectory
there. However, if called from Lisp with a non-nil optional