dopus query background <desktop|lister|req>

This command allows you to query the current background picture for
either the Desktop, Listers, or Requesters.  The path and filename will
be returned in  RESULT .

For example,
        + dopus query background desktop
        > DOpus5:Backgrounds/Stonewash.iff


See also:

 dopus query 
 dopus refresh background 
 dopus set 
 dopus set background