Haha 
Inspection is a pretty powerful tool for verifying where to add images, what are good and weak points of the scene.
For example, when inspecting aerial and street level photos, lasers & photos, closing loops, you can easily verify whether cameras are connected.
inspect.JPG
Panel settings defines/filters edges between cameras which you see, e.g., two cameras are connected if they have at least 100 matches in common such that those matches are visible in at least 5 cameras (consistency). The edge color is blue-to-red indicating how strong the edge is - more features, more red. But this is sort of normalize to see the best/weak easily.
Connected cameras form a virtual component - each component has a different color. Every two different components have less than (component connectivity) edges in-between. This way you can directly see an octopus legs in different colors.
We will add this topic into app help soon.