What does the block do in general terms.
Open a pop-up window to view and maybe interact with information extracted from the state left by other blocks.
Example of the block working.
POPUP renders data in a way judged suitable for exploring content that may have other purpose. Say what kind of information you have.
- state — all state properties as JSON - images - all COMMONS images as thumbnails
CLICK GET COMMONS POPUP images
The "state" way reads any.state, "images" reads state.commons.