Artikel 6

1. As regards the Kingdom of the Netherlands, this Convention may be extended, either in its entirety or with any necessary modifications, to either the Netherlands Antilles or Aruba or both countries, if the country concerned imposes taxes substantially similar in character to those to which this Convention applies. Any such extension shall take effect from such date and be subject to such modifications and conditions, including conditions as to termination, as may be specified and agreed in notes to be exchanged through diplomatic channels.
2. Unless otherwise agreed the termination of this Convention shall not also terminate the application of this Convention to any territory or country to which it has been extended under this Article.