Haven't thought about air simulation. I think blocking air from entering is probably best, and then all air inside will also be frozen.
maybe you could toggle it like with e wall? on = movemen?
@Potbelly (View Post)
I'm thinking this would be good for saves that demonstrate changing objects. For example, piston moving machines and/or bombs. Then you can use PSTN and BRAY to push something out of the wall and have it activate.
you could use it for holding bombs or reactions, maybe even subframe stuff too