$help = &new Help(HELP_SOURCE_FILE, array($help_file, $help_file_fallback));
$topics = $help->topics();
foreach ($topics as $id => $title) {
  $help2 = &new Help(HELP_SOURCE_RAW, $help->_buffer);
  $help2->lookup($id);
  $help2->display();
  $help2->cleanup();
}
$help->cleanup();