sS hcrud_mergeTables(S table1, S table2, S connector) {
  LS tok1 = htmlTok(table1), tok2 = htmlTok(table2);
  LS tbl1 = first(findContainerTag(tok1, "table"));
  LS tbl2 = first(findContainerTag(tok2, "table"));
  if (tbl1 == null) ret table2;
  if (tbl2 == null) ret table1;
  LLS rows1 = findContainerTag(tbl1, "tr");
  LLS rows2 = findContainerTag(tbl2, "tr");
  print("rows1: " + l(rows1) + ", rows2: " + l(rows2));
  int nRows = max(l(rows1), l(rows2));
  new LS rows;
  for i to nRows: {
    LS row1 = dropFirstTwoAndLastTwo(get(rows1, i));
    LS row2 = dropFirstTwoAndLastTwo(get(rows2, i));
    row2 = dropFirst(row2, indexOfIC(row2, "</td>")+1); // drop the 1., 2., 3.
    rows.add(tr(join(concatLists(row1, ll(td(connector)), row2))));
  }
  replaceTokens(tbl1, 2, l(tbl1)-2, lines(rows));
  ret join(tok1);
}