Just like a real house it is made up of walls and ceilings. As you never know how tall it will become the ceilings look like a roof. The marks on the roof determine how the walls of the following floor have to be erected, and the symbols on the roof determine certain building conditions.
Just like a real house it is made up of walls and ceilings. As you never know how tall it will become the ceilings look like a roof. The marks on the roof determine how the walls of the following floor have to be erected, and the symbols on the roof determine certain building conditions.