docs: def reset_filter(self):
          '''
          Resets the filter and goes back to initialized value. This
          routine also resets the style if you have changed it.
  
          '''
          self.header_desc = self._header_desc
          self.header_data = self._header_data
          self.header_style = self._header_style
          self.desc = self._desc
          self.data = self._data
          self.style = self._style
          self.descdict = self._descdict
          self.datadict = self._datadict
          self.styledict = self._styledict