<https://www.autodesk.com/blogs/autocad/whats-new-autocad-2019-graphics-enhancements/>
<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<http://schema.org/WebPage>
<https://www.autodesk.com/blogs/autocad/whats-new-autocad-2019-graphics-enhancements/>