Workshop. A stone bridge crosses.

Describes structures and materials used in an 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.

A longer boundary along the pedestrian route. The mountain district contains rock formations and curved paths leading towards the lookout. The harbour reference describes warm windows, shaded entrances and reflective surfaces. The collision.

City environment. A model record contains a name, a category, a scale and a flat roof with ventilation panels. The material reference lists surface.