add_anchors(result.getroot())
add_table_of_contents(result.getroot())
result.write(output_filename, xml_declaration=False, pretty_print=True, encoding='utf-8')
add_anchors(result.getroot())
add_table_of_contents(result.getroot())
result.write(output_filename, xml_declaration=False, pretty_print=True, encoding='utf-8')