-: **ewicti()**
-Looks up the first argument (optional in the english Wiktionary
-which is an online dictionary (See: http://en.wiktionary.org/).
-
-: **exirename()**
-Renames image files based on date/time informations in their exif headers.
-
-: **fir()**
-Opens given URL with Firefox (Iceweasel on Debian). If there is already an
-instance of firefox running, attaches to the first window found and opens the
-URL in a new tab (this even works across an ssh session).
-