<https://www.luzuk.com/forums/topic/the-header-will-not-show-up-in-pro-like-the-regular-version/>
<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<https://www.luzuk.com/topic/the-header-will-not-show-up-in-pro-like-the-regular-version/>