Hi, The Historical template uses Source and Category entity types. In this context, Source would be the original source of historical information for that event. Category can just be used as to divide your events into categories. However if you don't think you need these entity types, then you can just delete them from the template, as you don't need to use them. Jess
Thanks, Jess. I was using the Historical Template and couldn't find examples of their use. I would have thought the "world inventions" sample would have Source and Category used, just to show why these entities exist. A suggestion (feature request): In the user manual, document each built-in template's features fully. This would be an instance of where the sentences above would have been helpful. Thanks again for the fast answer. Thomas