Additional examples and links.

Railway. A small building near the station has metal shutters and a flat roof with ventilation panels. The material reference lists surface names, colour.

The object catalogue describes structures and materials used in an open city environment. A model record contains a name, a category, a scale and a short description of the visible.

Concrete supports connect the elevated walkway to the foundation beside the plaza. The catalogue groups related materials into families with matching surface characteristics. Review.