In Rule 2.2, replace “A group of connected Locations enclosed by Walls, Doors and/or Rock is known as a Room. If any single Location would be in more than one Room, only the largest counts as a Room. The Location of the door of the room is not considered as in the Room. If a Location is in a Room, that Location is Indoors. Otherwise, it is Outside. ” with:-

Walls, Doors and Rock are all Barrier Locations; other Locations are Free Locations. If a group of connected Free Locations is entirely enclosed by Barrier Locations, the Free Locations are known as a Room. If any single Location would be in more than one Room, only the largest counts as a Room. If a Location is part of a Room, that Location is Indoors. Otherwise, it is Outside.