Example of such: center_rotating_beam_ring2, center_rotating_beam_ring3, and center_rotating_beam_ring4 on the map c3a2h.
I’ve been making a shutdown sequence for the lambda teleporter as part of a project of mine, and I noticed that no matter what I did the ring beams would not go away. So after trying a few other things I decided to turn off the “Ring” flag, which of course solved the problem.