<https://sitemaps.raddy.co.uk/blog/how-to-add-wordpress-dashboard-widget-with-custom-options-fields-wp-dashboard-api/#breadcrumb>
<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<https://cpanel.raddy.co.uk/blog/how-to-add-wordpress-dashboard-widget-with-custom-options-fields-wp-dashboard-api/>