Thank you! I've seen another player mention naming visited rooms and I think it's a great idea that will help a lot. In 'canon' if you like the station is already completely pitch black throughout, that's why you are relying on your PDA. But I like the idea that in some places the PDA could glitch and not tell you everything. Maybe there could be a special type of experiment that you need to zap to make it work properly again. Hmmm... thank you for the ideas!