Copyright (C) 1993 Aladdin Enterprises. All rights reserved. This file is part of Ghostscript. Ghostscript is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY. No author or distributor accepts responsibility to anyone for the consequences of using it or for whether it serves any particular purpose or works at all, unless he says so in writing. Refer to the Ghostscript General Public License for full details. Everyone is granted permission to copy, modify and redistribute Ghostscript, but only under the conditions described in the Ghostscript General Public License. A copy of this license is supposed to have been given to you along with Ghostscript so you can know your rights and responsibilities. It should be in a file named COPYING. Among other things, the copyright notice and this notice must be preserved on all copies. - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - This file, helpers.doc, is a note of thanks to all the people who have helped in the development of Ghostscript. For an overview of Ghostscript and a list of the documentation files, see README. Major contributors ------------------ Special thanks are due to Russell Lang, for the gsview (Ghostview for Microsoft Windows) program and for contributing most of the code for the Microsoft Windows environment, and to Tim Theisen, for the Ghostview program for X Windows and for major contributions to the code for the X Windows environment. Other contributors ------------------ Aladdin Enterprises would like to acknowledge and thank the following other people (in alphabetical order) who have contributed substantially to improving Ghostscript since its inception in 1986: Hitoshi Aida (for help with the SunView driver), William Bader (for several drivers and bug reports), Karl Berry and Kathy Hargreaves (for helping create the fonts distributed with Ghostscript), James W. Birdsall (for the IBM ProPrinter driver), Jan Bottorff (for help with the Microsoft Windows driver), George Cameron (for DeskJet 500C and 550C drivers), Maurice Castro (a collaborator of Russell Lang's), Phil Conrad (for originating the PPM utilities and the PCX and GIF drivers, and lots of bug reports), Michel Dagenais (for major help with the DeskJet driver), Gershon Elber (for improvements to the BGI driver), Mike Ferrara (for help with the LaserJet driver and HP-UX), Andy Fyfe (for the BJ200 driver modifications to the BJ10e driver), Tim Gallivan (for a port to the Atari ST), J Greely (for help with the PostScript-to-ASCII filter), Paul Haeberli (for the ideas behind better color selection and trapezoid fill algorithms), Karl Hakimian (for the Tek 4693d drivers), Richard Hesketh (for GSPreview), Thomas Hiller (for the Trident TVGA driver), Frans van Hoesel (for improvements to the DeskJet driver), Berthold K. P. Horn (for a better spot halftone screen), Earl Johnson (for the motivation for the ps2ascii utility), Alfred Kayser (for a DeskJet 500C driver and beta testing), Richard Keeney (for help with the SunView driver), Markku Koppinen (for a better circle-to-curve algorithm), Eleftherios Koutsofios (for help with the SunView driver), Ian MacPhedran (for a sixel driver), Jim Mayer (for help with the DeskJet and LaserJet drivers), Richard Mlynarik (for a nearly overwhelming volume of improvements and suggestions), Ulrich Mueller (for the LN03 driver), Daniel Newman (for major help with VMS and the CCITT Fax filters), Roque Donizete de Oliveira (for testing and debugging, and a 'man' page), Marc Paquette (for the original PaintJet driver), Hal Peterson (for major help with BDF fonts), Tom Quinn (for the Canon LBP-8II driver), Matthias Rabe (for work on an OS/2 port), Jerry Roylance (for help with statusdict), Dave St. Clair (for the color Epson/Fujitsu driver), Jan Sanislo (for two subtle but vital fixes), Clemens Schrimpe (for help with accented characters), Mike Smolenski (for the Sony drivers), Snoopy (for major help with Hershey fonts, and many other contributions), Karsten Spang (for the Tektronix 4695/4696 driver), Andreas Stolcke (for help with the SunView driver), Christoph Strozyk (for getting the URW fonts made available), Michael Sweet (for help with the high-density Epson driver), Gregg Townsend (for the low-resolution dithering algorithm), Christian Tschudin (for fixes to the virtual memory package, and for the original BubbleJet driver), Jos Vos (for the original PBM/PGM/PPM driver, and for much beta testing), Allan Wax (for the AT&T 6300 modification to the BGI driver), David Wexelblat (for the high-resolution 9-pin Epson driver), Elizabeth Zwicky (for some very challenging examples). The following people have also helped out by beta testing, by reporting bugs and/or fixes, or in other ways: Vikas Aggarwal, Michael Almond, Abramo Bagnara, Malcolm Bennett, David Brooks, Jim Collins, Peter da Silva, Art Dederick, Paul DuBois, Toerless Eckert, Bernhard Fabricius, Mark Friedman, Richard Foulk, Glenn Geers, Dave Goldblatt, Ben Goren, Dirk Grunwald, Lars Haakedal, Adam Hammer, George Hartzell, Mike Hoffmann, Charles Hulse, Brad Jones, Terry Jones, David Keppel, Anthony Lee, John Lundin Jr., Lee McLoughlin, Stergios Marinopoulos, Herb Martin, David Maynard, Doug McDonald, Rich Murphey, Russ Nelson, Peter Phillips, Mark Rawling, Philippe Robert, Tomas Rokicki, Wolfgang Rupprecht, Bill Schelter, Bakul Shah, Erik Talvola, Kjetil Bernhard Thomassen, Amanda Walker, Peter Wan, John L. Wehle, Carsten Wiethoff, Carl Witty, Frank Yellin, Jamie Zawinski. If your name appears on the above list and I've forgotten a particular contribution you made, or if it doesn't appear at all, please forgive me: just remind me, and you will be properly acknowledged in the next release.