<https://www.calszone.com/2017/11/the-cal-zone-erp-tips-tricks-newsletter-november-2017/>
<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<https://www.calszone.com/2017/11/the-cal-zone-erp-tips-tricks-newsletter-november-2017/>