\section{Acknowledgements}
We would like to thank Prof.\ Dr.\ R\"udiger Valk and Dr.\ Daniel Moldt
from the University of Hamburg for interesting discussions, help, 
and encouraging comments. 

We would also like to thank
David Altenkamp,
Nam Anh Duong,
Sophie Bartelt,
Levi Benecke,
Beril Boran,
Simon Bott,
Sinan Brendel,
Marvin Brendel,
Bastian Butzke,
Laif-Oke Clasen,
Clara Dorothea von Bargen,
Leon Eisenblätter,
Melissa Eisenburger,
Sebastian Fumanek,
Magdalina Genova,
Lorenz Grimm
Tim Groth,
Arthur Hagen,
Robin Huß Ayala,
Robin Kirsch,
Sam Knoop,
Julian Köster,
Lukas Krellenberg,
Lasse Kuhnt,
Stefan Le,
Patrick Leonhardt,
Eric Liebrecht,
Maja Mercedes Perz,
Justus Middendorf,
Gavril Milchev,
Marvin Müller,
Michael Mutin,
Paul Nedelmann,
Mika Neumann,
Jan Niklas Ritter,
Fati Oboyse Tina,
Kilian Patrick Maier,
Shawn Ray Söker,
Mica Ruben Langkat,
Julius Ruchhöft,
Philipp Schult,
Fabian Slack,
Elden Sokoli,
Lennard Solterbeck,
Yannik Stahl,
Finn Stolten,
Robin Teichmann,
Jan Vincent Hölzle,
Eva-Lotte Vischer,
Leven Wichelmann and
Leon Zander
Maxim Amrein
for their work during the preparation of this
release.

We would like to thank J\"orn Schumacher
for the prototype of the plug-in system (2.0), Benjamin Schleinzer
for his work during the preparation of former releases (2.1-2.2) and 
Berndt M\"uller who %%Farwer 
has been of great help with respect to previous
Renew releases for MacOS ($\leq{}$2.0).
Some nice extensions of Renew were suggested or programmed
by Michael K\"oh\-ler-Bu{\ss}meier and Heiko R\"olke.

We are indebted to the authors of various freeware libraries, namely
Mark Donszelmann, %%% freehep vectorgraphics
Erich Gamma, %%% JHotDraw
Doug Lea, %%% collections package (still used in FS)
David Megginson, %%% SAX
Bill McKeeman %%% Java Grammar
and Sriram Sankar. %%% JavaCC
%Marc Prud'hommeaux (JLine1), Jason Dillon, Guillaume Nodet, Colin Jones (JLine2)

Dr.\ Maryam Purvis, Dr.\ Da Deng, and Selena Lemalu 
from the Department of Information Science
(\texttt{http://infosci.otago.ac.nz/}), University of
Otago, Dunedin, New Zealand,
kindly aided us in the translation of parts of the documentation
and are involved in an interesting application project.

Valuable contributions and suggestions were made by
students and scientific workers at the University of Hamburg, most notably
Hannes Ahrens,
Tobias Betz, 
Jan Bolte,
Lars Braubach,
Timo Carl,
Dominic Dibbern,
Friedrich Delgado Friedrichs,
Matthias Ernst, 
Matthias Feldmann,
Max Friedrich,
Daniel Friehe,
Olaf Gro\ss ler, 
Julia Hagemeister,
Sven Heitsch,
Marcin Hewelt,
Jan Hicken,
Thomas Jacob, 
Andreas Kanzlers,
Lutz Kirsten,
Till Kothe,
Annette Laue, 
Matthias Liedtke, 
Marcel Martens, 
Klaus Mit\-rei\-ter,
Konstantin M\"ollers,
Eva M\"uller,
Jens Nor\-gall,
Sven Offermann,
Felix Ortmann,
Martin Pfeiffer, 
Alexander Pokahr,
Tobias Rathjen,
Dennis Reher,
Christian R\"oder,
Heiko R\"olke, 
Benjamin Schleinzer,
Jan Schl\"uter,
Marc Sch\"on\-berg,
J\"orn Schumacher,
Michael Simon,
Fabian Sobanski, 
Volker Tell,
Benjamin Teuber,
Thomas Wagner,
Matthias Wester-Ebbinghaus, 
Martin Wincierz,
and Eberhard Wolff.

We also thank the following students for their contributions to the releases of Renew since version 4.0
Youssef Al Shriteh,
Deert Bessey,
Sven Billigmann,
Marvin Brendel,
Laif-Oke Clasen,
Valerij Dobler,
Kjell Ehlers,
Marcel Hansson,
Max Hartenstein,
Alexander Heinze,
Benjamin Hosseini,
Karl Ihlenfeldt,
Jan Robert Janneck,
Jonte Johnsen,
Svenja Junghans,
Abdulssatar Khateb,
Laszlo Korte,
Tim Kowalczyk,
Valentin Kroen,
Jannik Kronziel,
Clemens Kurz,
Hamed Mohammadi,
Patrick Mohr,
Rana Mostafa,
Justus Müller,
Justin Pietsch,
Morten Purwin,
Tim Radke,
Jannis Schuhardt,
Malte Schuld,
Sven Schwartz,
Alexander Senger,
Elden Sokoli,
Relana Streckenbach,
Miriam Strulik,
Marvin Taube,
Kiro Vasilovski,
Thorwin Vogt,
Lukas Voß,
Kevin Wessel,
Christian Willner and
Sven Willrodt.



We would like to thank the numerous users of Renew who provided
hints and constructive criticism. They helped greatly in improving the
quality of the code and the documentation. In particular, 
we would like to name Alun Champion and Zacharias Tsiatsoulis.

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