static S text2floatingLetters(S text) {
  new L<S> out;
  int x = 0, y = 0;
  for (char c : stringAsList(text)) {
    if (eq(c, '\n')) {
      x = 0;
      y += 8;
    } else if (eq(c, '\t'))
      x += 8*tabSize();
    else if (eq(c, '\r')) {}
    else {
      if (!isWhiteSpace(c))
        out.add("Char " + quote(c) + " at (" + x + " " + y + "*8 8)");
      x += 8;
    }
  }
  ret lines(out);
}