<https://blogs.solidworks.com/tech/#/schema/person/034339eead2cef4603262afdfd747d7e>
<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<https://blogs.solidworks.com/tech/2017/10/reverse-arc-and-spline-tangency-options-solidworks-2018.html>