sS renderHowLongAgoPlusModified(long timestamp, long timestamp2, O... _) {
  optPar S spacer = ", modified ";
  if (timestamp2 == 0) timestamp2 = timestamp;
  S s = renderHowLongAgo(timestamp);
  S s2 = renderHowLongAgo(timestamp2);
  ret eq(s, s2) ? s : s + ", modified " + s2;
}