The VR-DIS research programme is the research work done in the Design Systems group of Eindhoven University of Technology. It was established in 1998, at the same time when the former groups of Building Information and Design Methods were fused. The research programme is based on the main premise that interactive and immersive representation of design (knowledge) will best support the design process in the future. The VR-DIS acronyms Virtual Reality – Design Information System and Distributed Interactive Simulation conform to this belief. Not only the design itself, but also interaction with the design, knowledge of the user, and behaviour of the building design should be accessible in a responsive environment.