static LS basicFactsAboutTelegramMsg(TelegramMsg msg) {
  S triv = telegram_chatIDToTrivialName(msg.chatID);
  S ref = "Message " + triv + "_" + msg.date + "_" + msg.globalID;
  new LS out;
  if (msg.userID == 0) out.add(ref + " was sent by bot");
  else out.add(ref + " was sent by user ID " + msg.userID);
  out.add(ref + " has text " + quote(msg.text));
  if (msg.date != 0) out.add(ref + " has date " + msg.date);
  if (msg.originalDate != 0) out.add(ref + " has original date " + msg.originalDate);
  if (msg.chatID != 0) out.add(ref + " was sent in Telegram chat " + (-msg.chatID));
  ret out;
}