Block Media Positions
Every block allows for a few configurable text positions and a place for a media element. When enabling a media element you can set it up to be an image, form, google map, video and many other potential rich web components. You may select a custom element here to be used.
If you create a custom element using mustache style tokens for replacement such as {{title}} and {{city}} you can then set those values in the media panel for usage. This feature enables you to be able to create reusable custom components that can be easily tweaked for the context of where they are used.