<https://forum.reapermini.com/index.php?/topic/67704-square-bases-with-rounded-corners/#comment-1332562>
<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<https://forum.reapermini.com/index.php?/topic/67704-square-bases-with-rounded-corners/#comment-1332562>