Put a Dired buffer in Writable Dired (WDired) mode.
Uses keymap `wdired-mode-map', which is not currently defined.
In WDired mode, you can edit the names of the files in the
buffer, the target of the links, and the permission bits of the
files. After typing M-x wdired-finish-edit, Emacs modifies the files and
directories to reflect your edits.
See `wdired-mode'.
(fn)