code: def on_stress_menu_open(self, widget):
          
          self.original_widget = urwid.Overlay(self.stress_menu.main_window,
                                               self.original_widget,
                                               ('relative', self.left_margin),
                                               self.stress_menu.get_size()[1],
                                               ('relative', self.top_margin),
                                               self.stress_menu.get_size()[0])
docs: Open stress options