<https://forum.affinity.serif.com/index.php?/topic/20111-cannot-get-rid-of-selection-brush-tool/#comment-93632>
<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<https://forum.affinity.serif.com/index.php?/topic/20111-cannot-get-rid-of-selection-brush-tool/>