QOL Mk3, 15.5 Q&A plus Misc clean up : Oxygen not included

Answer a few questions and tidy up all the things that have been bugging me for a while. Need to get this all out of the way before tackling the oil boiler. Map seed : 1756624780 List of tutorials for this game https://forums.kleientertainment.com/forums/topic/104546-tutorial-list-with-links/