code: private function writeCountry()
      {
          $record = 0x008C; // Record identifier
          $length = 4; // Number of bytes to follow
  
          $header = pack('vv', $record, $length);
          // using the same country code always for simplicity
          $data = pack('vv', $this->countryCode, $this->countryCode);
  
          return $this->writeData($header . $data);
      }
docs: Stores the COUNTRY record for localization.
  
  @return string