code: def _render_str(self, string):
          
          if isinstance(string, StrLabel):
              string = string._render(string.expr)
          string = str(string)
          if len(string) == 0:
              return ''
          name, supers, subs = split_super_sub(string)
          return render_unicode_sub_super(
              name, subs, supers, sub_first=True, translate_symbols=True,
              unicode_sub_super=self._settings['unicode_sub_super'])
docs: Returned a unicodified version of the string