APU on or off. Fire suppression, bleed, and generators. The display is hidden on a lower screen synoptic.
Hidden displays are the rule, there's probably a couple of dozen hidden displays, which can contain dozens of items each. The APU is one of the simpler pages.
We have overall control of all of the cabin services, but we don't have detailed control. For instance I can take away all of the electrical power, but I can't do it to just one seat. Same with heating, where we can change the overall temp, but not small areas. Waste system looks after itself.
