<https://techtalkings.com/idle-tap-zoo-tap-build-upgrade-a-custom-zoo-for-pc-windows-and-mac-os/#webpage>
<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<https://techtalkings.com/idle-tap-zoo-tap-build-upgrade-a-custom-zoo-for-pc-windows-and-mac-os/>