sS asciiTable(LS headers, LL<S> data) {

  new L<LS> buffers;

  for i over headers:

    addAll(listGetOrCreate_List(buffers, i), headers.get(i), " ");

  for unnull (LS line : data)

    for i over line:

      listGetOrCreate_List(buffers, i).add(line.get(i));

  LS lines = lines(asciiSideBySideWithBarsAllAround(map lines(buffers)));

  if (l(lines) > 2)

    lines.set(2, lines.get(2).replace(" ", "-"));

  ret lines(lines);

}