<https://forums.lightorama.com/topic/53713-help-sequences-for-an-lor-16-x-25-pixel-tree/#comment-503706>
<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<https://forums.lightorama.com/topic/53713-help-sequences-for-an-lor-16-x-25-pixel-tree/>