* dired.el (dired-mode-map): Make :help text more accurate (bug#14893).
(dired-prev-marked-file): Doc fix (bug#14855).
+ (dired-up-directory): Doc fix (bug#14848).
* minibuffer.el (read-file-name): Doc clarification (bug#15096).
(defun dired-up-directory (&optional other-window)
"Run Dired on parent directory of current directory.
Find the parent directory either in this buffer or another buffer.
-Creates a buffer if necessary."
+Creates a buffer if necessary.
+If OTHER-WINDOW (the optional prefix arg), display the parent
+directory in another window."
(interactive "P")
(let* ((dir (dired-current-directory))
(up (file-name-directory (directory-file-name dir))))