I was playing with these last night. I’ve never seen them before and I have no doubt, they are the “next level” of the Perspective Disciplines. 

It was the ability to stand directly in an entirely new Perspective and then switch at the drop of the hat and step into another Chamber. 

I had just started to explore the Chambers, and was able to identify them prior to exiting Lucid Dreaming and waking up. 

I will be writing more as I revisit this.