How to shut down the power
From HSG Wiki
Hit the big red button behind the door which will close down the barcomputer and turn off the power to other systems. This process takes a few minutes to complete. Make sure not to flip the lightswitch again after having hit the red button or the shutdown procedure will be aborted. Both roofs need to be closed manually before starting the shutdown.
- close roof in the back: use the rotary switch next to the door
- close roof in front: from the `0x20` network surf to `unipi/` or `unipi.0x20` and click the `down` button for the roof