<https://www.danstutorials.com/tutorials/tutor-for-iphone/lessons/home-screen-basics-on-the-iphone/#breadcrumb>
<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<https://www.danstutorials.com/tutorials/tutor-for-iphone/lessons/home-screen-basics-on-the-iphone/>