<https://www.techpowerup.com/forums/threads/trying-to-decide-on-an-rgb-kb-m-set.292623/>
<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<https://www.techpowerup.com/forums/threads/trying-to-decide-on-an-rgb-kb-m-set.292623/#post-4714405>