code: def if_begin_action(self, text, loc, arg):
          
          exshared.setpos(loc, text)
          if DEBUG > 0:
              print("IF_BEGIN:",arg)
              if DEBUG == 2: self.symtab.display()
              if DEBUG > 2: return
          self.false_label_number += 1
          self.label_number = self.false_label_number
          self.codegen.newline_label("if{0}".format(self.label_number), True, True)
docs: Code executed after recognising an if statement (if keyword)