The authors

Anton Eliëns is lecturer/researcher at the Software Engineering section of the Computer Science Department of the Vrije Universiteit, Amsterdam. He is coordinator and leader of the DejaVu project. His research interests include object orientation, hypermedia and distributed logic programming.

Martijn van Welie, Jacco van Ossenbruggen and Bastiaan Schönhage are PhD. students at the Software Engineering section of the VU. They all participate in the DejaVu project. Martijn's research involves the development of groupware applications for the design of complex systems, and in particular the problem of dealing with inconsistencies that may arise in collaborative design. Jacco is doing research on time-based hypermedia, his research interests cover SGML, HyTime and the formalization of hypermedia models. Bastiaan is currently working at DIVA, a distributed architecture for visualisation. His research interests include simulation and 3D animation.