code: def set_title(self,s,panel=None):
          "set plot title"
          if panel is None: panel = self.current_panel
          self.panels[panel].set_title(sf set_title(self,s,panel=None):
          "set plot title"
          if panel is None: panel = self.current_panel
          self.panels[panel].set_title(s)
docs: set plot title