static L<Web> readWebsLog(File log) {
  IterableIterator<SoftwareMadeWeb> l = scanLog_unstructure_iterator(log);
  S src = progID;
  new L<Web> webs;
  for (SoftwareMadeWeb o : l) pcall {
    Web web = o.web;
    if (web == null)
      web = (Web) unstructure(o.structure);
    if (web != null) {
      webs.add(web_intern(web_setSourceIfEmpty(web, src)));
      mapPut(furtherInfoMap, web, o);
    }
  }
  ret webs;
}