public static function title($title, $pad = '=')
    {
        $rest = (int) (78 - mb_strlen($title)) / 2;

        $result = "\n\n";
        $result .= str_repeat($pad, $rest);
        $result .= ' ' . $title . ' ';
        $result .= str_repeat($pad, $rest);
        $result .= "\n\n";
        return $result;
    }