Is there a way to succinctly place a backdrop in all rooms of a region except for one? (Here I’m also putting it in an extra room outside the region too.)
Line A is a room. Line B is a room. Platform is a room. Siding is a room. Foyer is a room. Line A, Line B, Platform, and Foyer are in a region called Railyard. The track is a backdrop. It is in Siding and in Railyard except Foyer. [Also tried: The track is a backdrop. It is in Siding and in Railyard. It is not in Foyer.]
This fails on the last lines. I can make it work by spelling out the individual rooms again, or by removing Foyer from the Railyard, but I don’t really want to do either of those things.
I also tried the more complicated wording:
To decide whether or not (place - a room) needs a rail: if place is Siding, decide yes; if place is Foyer, decide no; if place is in Railyard, decide yes; decide no. The track is a backdrop. It is in each room that needs a rail.
This one compiles, but doesn’t seem to actually put the track in any of the rooms. Any other ideas, or do I have to do it the long way?