private function get_translation_string($num) {
        $length = $this->table_translations[$num * 2 + 1];
        $offset = $this->table_translations[$num * 2 + 2];
        if (!$length)
            return '';
        fseek($this->STREAM, $offset);
        $data = fread($this->STREAM, $length);
        return (string)$data;
    }