A grid of comparable items, for when the answer is several things held side by side.
Properties
These are the fields this surface accepts. They matter when you build one through the API; the work sets them for you otherwise.
What you can do
When this is chosen
The work picks the surface that fits what it produced — you do not have to ask for Cards by name. If it picked the wrong one, you can move the result to a different surface from the interface menu.