[x]  When a node or point list is active, setting     
      this switch enables automatic updating when new  
      Diff files arrive. Be sure that the ARC unpacker 
      in  /Config/External/unpacker is available.      
                                                       
                                                       
 [ ]  Diff files have to be manually unpacked,         
       by selecting commands from the menus.           
                                                       
 Diff files stay in the FileReq directory until        
 deleted by hand, even when they are automatically     
 imported. (FileReq see /Config/Paths)