<https://tribulant.com/docs/wordpress-mailing-list-plugin/9194/newsletter-4-4-3-release-notes/#breadcrumb>
<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<https://develop.tribulant.com/docs/wordpress-mailing-list-plugin/9194/newsletter-4-4-3-release-notes/>