code: def on_menu_clear_interpretation(self, event):
          '''
          clear all current interpretations.
          '''
  
          #  delete all previous interpretation
          for sp in list(self.Data.keys()):
              del self.Data[sp]['pars']
              self.Data[sp]['pars'] = {}
              self.Data[sp]['pars']['lab_dc_field'] = self.Data[sp]['lab_dc_field']
              self.Data[sp]['pars']['er_specimen_name'] = self.Data[sp]['er_specimen_name']
              self.Data[sp]['pars']['er_sample_name'] = self.Data[sp]['er_sample_name']
          self.Data_samples = {}
          self.Data_sites = {}
          self.tmin_box.SetValue("")
          self.tmax_box.SetValue("")
          self.clear_boxes()
          self.draw_figure(self.sf on_menu_clear_interpretation(self, event):
          '''
          clear all current interpretations.
          '''
  
          #  delete all previous interpretation
          for sp in list(self.Data.keys()):
              del self.Data[sp]['pars']
              self.Data[sp]['pars'] = {}
              self.Data[sp]['pars']['lab_dc_field'] = self.Data[sp]['lab_dc_field']
              self.Data[sp]['pars']['er_specimen_name'] = self.Data[sp]['er_specimen_name']
              self.Data[sp]['pars']['er_sample_name'] = self.Data[sp]['er_sample_name']
          self.Data_samples = {}
          self.Data_sites = {}
          self.tmin_box.SetValue("")
          self.tmax_box.SetValue("")
          self.clear_boxes()
          self.draw_figure(self.s)
docs: clear all current interpretations.