code: def parameter_action(self, text, loc, par):
          
          exshared.setpos(loc, text)
          if DEBUG > 0:
              print("PARAM:",par)
              if DEBUG == 2: self.symtab.display()
              if DEBUG > 2: return
          index = self.symtab.insert_parameter(par.name, par.type)
          self.shared.function_params += 1
          return index
docs: Code executed after recognising a parameter