Acknowledgments

I am most thankful for having the unique experience of writing my Masters thesis at the University of Auckland in the beautiful country of New Zealand. Therefore, I want to thank my supervisor, Dr. Jennifer Lennon, for the invitation to Auckland, her support, and her friendship, and Prof. Hermann Maurer for his help to make this dream come true. I really want to thank my ``mate'' Mattias Moser, a real Hyperwave guru, for his support and the fun we had together. Many thanks to all members of the Hypermedia Unit, especially to Michael Joblin for his proof reading. I would also like to acknowledge the friendliness of the Department of Computer Science at the University of Auckland, particularly of HOD Peter Gibbons, who truly gave me the feeling of being welcome. Many thanks to Georg Essl and Bernhard Zwantschko for providing useful Java-classes for my project. Last but not least, I deeply thank my family for their support and love during my whole life.