code: def _render_content(self, content, **settings):
          
          ocontent = content
  
          s = self._es_data(settings)
          content = self.fmt_data(content, **s)
  
          s = self._es_content(settings)
          content = self.fmt_content(content, **s)
  
          if settings[self.SETTING_TEXT_HIGHLIGHT]:
              s = self._es_text(settings, settings[self.SETTING_TEXT_HIGHLIGHT](ocontent))
          else:
              s = self._es_text(settings, settings[self.SETTING_TEXT_FORMATING])
          content = self.fmt_text(content, **s)
  
          s = self._es_margin(settings)
          content = self.fmt_margin(content, **s)
  
          return content
docs: Perform widget rendering, but do not print anything.