docs: def sub_menu(self):
          """Create daemon submenu
          """
          submenu = gtk.Menu()
          self.start = gtk.ImageMenuItem("Start")
          self.stop = gtk.ImageMenuItem("Stop")
          self.restart = gtk.ImageMenuItem("Restart")
          self.status = gtk.ImageMenuItem("Status")
  
          self.start.show()
          self.stop.show()
          self.restart.show()
          self.status.show()
  
          img_Start = gtk.image_new_from_stock(gtk.STOCK_MEDIA_PLAY,
                                               gtk.ICON_SIZE_MENU)
          img_Start.show()
          self.start.set_image(img_Start)
  
          img_Stop = gtk.image_new_from_stock(gtk.STOCK_STOP,
                                              gtk.ICON_SIZE_MENU)
          img_Stop.show()
          self.stop.set_image(img_Stop)
  
          img_Restart = gtk.image_new_from_stock(gtk.STOCK_REFRESH,
                                                 gtk.ICON_SIZE_MENU)
          img_Restart.show()
          self.restart.set_image(img_Restart)
  
          img_Status = gtk.image_new_from_stock(gtk.STOCK_DIALOG_QUESTION,
                                                gtk.ICON_SIZE_MENU)
          img_Status.show()
          self.status.set_image(img_Status)
  
          submenu.append(self.start)
          submenu.append(self.stop)
          submenu.append(self.restart)
          submenu.append(self.status)
  
          self.daemon = gtk.ImageMenuItem("Daemon")
          self.img_daemon = gtk.image_new_from_stock(self.daemon_STOCK,
                                                     gtk.ICON_SIZE_MENU)
          self.img_daemon.show()
          self.daemon.set_submenu(submenu)