code: def setExpertLevel(self):
          
          g = get_root(self).globals
          level = g.cpars['expert_level']
  
          # now set whether buttons are permanently enabled or not
          if level == 0 or level == 1:
              self.load.setNonExpert()
              self.save.setNonExpert()
              self.unfreeze.setNonExpert()
              self.start.setNonExpert()
              self.stop.setNonExpert()
  
          elif level == 2:
              self.load.setExpert()
              self.save.setExpert()
              self.unfreeze.setExpert()
              self.start.setExpert()
              self.stop.setExpert()
docs: Set expert level