Yeah, DuB is right, but I understand what you mean. I was thinking something similar to that. See, my dreamsign is dreaming in my school in the same three areas, so basically your theory would be like to reality check in those three areas, that way when i AM dreaming about it, I will be able to DILD.

Good theory, but it woud just be all around more conveniant to make it a habit of reality checking anywhere.