A new switch would be added called the Lightswitch. Each lightswitch has a group, which is changed by shift-rightclicking it. Interior lights also have groups (changed in the same way).
Whenever the lightswitch is toggled, it toggles the state of the group it is in, which also toggles all interior lights of that same group.
A new switch would be added called the Lightswitch. Each lightswitch has a group, which is changed by shift-rightclicking it. Interior lights also have groups (changed in the same way). Whenever the lightswitch is toggled, it toggles the state of the group it is in, which also toggles all interior lights of that same group.