<https://forum.gitarnorge.no/topic/29783-ulyd-klikking-ved-stemming-av-nylon/#comment-408653>
<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<https://forum.gitarnorge.no/topic/29783-ulyd-klikking-ved-stemming-av-nylon/>