private function insertBreakLines()
    {
        var saveText = text;

        var last = _finalText.length;
        var n0:Int = 0;
        var n1:Int = 0;

        while (true)
        {
            last = _finalText.substr(0, last).lastIndexOf(" ");

            if (last <= 0)
                break;

            text = prefix + _finalText;
            n0 = textField.numLines;

            var nextText = _finalText.substr(0, last) + "\n" + _finalText.substr(last + 1, _finalText.length);

            text = prefix + nextText;
            n1 = textField.numLines;

            if (n0 == n1)
            {
                _finalText = nextText;
            }
        }

        text = saveText;
    }