why are so many check-boxes in the boundary condiditon library editor disabled?
I'm looking for the constant temperature boundary condition. In all very ancient documentaries, this check-box is always available. I do not know, since it's gone.
Thanks a lot
best regards,
Robert
![](https://lh3.googleusercontent.com/-lLqWaGWbPtU/VRFrkBJdNoI/AAAAAAAAAPg/bWkk-g1Lo5k/s320/Clipboard01.jpg)