You mean when you enable it? How it works it shows the stress "Lines" of gravity from say, GBMB. At the moment it starts exploding you will see :D
No, I mean I want to know how the gravity for each point is calculated.
Gravity wall blocks gravity when the conditions are like this.(it blocks gravity from outside to inside the box)
ideally, gravity wall shouldn't disable Newtonian gravity from working at all inside a box but instead create a new gravity zone inside