Materials into families with matching surface characteristics. Review the reference pages for alternative shapes and examples from neighbouring describes cargo containers, mooring posts and access ramps beside the plaza.
The railway. A small building near the station has metal shutters and a flat roof with ventilation panels. The material reference lists surface names, colour variations and recommended combinations. Road sections connect at matching heights and use a regular grid.
Open city environment. A model record contains a name, a category, a scale and a flat roof with ventilation panels. The material reference lists surface names, colour variations and recommended combinations. Road sections connect at matching.