Teapot is copyright (c) by Michael Haardt, 1995, 1996, 1997, 2001. The implementation of clocked expressions is modelled after the description of clocked evaluation in the PhD work of Jörg Wittenberger at the University of Technology in Dresden, Germany. The German message catalog was contributed by Guido Müsch, the Dutch catalog by Wim van Dorst and the Ukrainian catalog by Volodymyr M. Lisivka . The trigonometric functions were inspired by Koniorczyk Mátyás . The context output format was contributed by Marko Schuetz . You may use and modify this program or derived works without charge for personal use and at work under the condition that no copyright notices are removed or changed. Distributing teapot under different conditions and any commercial use like charging for copying or selling it or derived works, alone or as part of a bigger product, needs a written license from me. I can be reached by: Snail mail: Michael Haardt An Neuenhofen 40 47800 Krefeld Germany Email: michael@moria.de Disclaimer: I am in no way responsible for anything caused by using this program, so if your computer or house blows up, that's your problem.