This section of the configuration file simply deals with the names of external helper commands that may be invoked from time to time by the WACS applications. Introduced in Wacs 0.8.6, the initial parameters are imageviewer and movieplayer. It is expected that further commands related to thumbnailing movies and other similar tasks will be added in due course.

 <external>
  <imageviewer>gqview</imageviewer>
  <movieplayer>mplayer -fs</movieplayer>
 </external>