Catalogue describes structures and materials.

Section provides additional examples and links to related entries in the catalogue. Use the model description to compare similar objects before selecting a placement.

Ventilation panels. The material reference lists surface names, colour variations and recommended combinations. Road sections connect at matching heights and use a regular grid for.

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.