These is a rare lighting mode. It is for scenes shot inside of a dark building, with visible windows or other cues indicating that it is daytime outside. In this type of shot, some level of film noir shadows may be cast in through the windows, to contrast with the otherwise dark interior, but imagine if the next scene transition goes to having the lights back on again, it shouldn't be so extreme that it seems like the sun itself disappeared, more like the lights are on and our eyes have adjusted so that the sun outside is no longer relevant.

This is really just a “Location Option” impacting the backdrops and overlays, and Characters should be treated in every other way the same as for Nighttime Dark Room scenes.

Scene Lighting Modes