Okay, so I'm starting up a new game soon, and one of my players asked me about sanctums. Now, in the Resources, it talks about how to get the rating for it, but what does the rating mean? What is the difference between a +1 Sanctum and a +3? How does that interact with doing rituals and such at home? For that matter, what can you do in a +3 Lab that you can't in a +1?