======================================================================== * CREDITS.txt ======================================================================== ==================================== Package "Date::Calc" Version 6.3 ==================================== Copyright (c) 1995 - 2009 by Steffen Beyer. All rights reserved. Credits: -------- Many thanks to Andreas Koenig for his efforts as upload-manager for the CPAN, his patience, and lots of very good advice and suggestions! Thank you for doing such a tremendous (and very time-consuming) job!! Also many thanks to David Jenkins for reviewing the first version of this README file and the english man page. Thanks to Jarkko Hietaniemi for suggesting the "days_in_month()" function. Many thanks to Christian for reporting the bug fixed in version 1.4, which showed up on an HP E55 running HP-UX 10.01 and Perl 5.001m with the c89 Ansi 89 compiler from HP. Also many thanks to David Thompson for reporting a problem he encountered concerning the inclusion of the Perl distribution ("Unable to find include file ...") and for suggesting a solution for this problem. (That's the most pleasant kind of problem report, of course! ;-) ) Many thanks to Tom Limoncelli for raising the question of how to calculate the 2nd Thursday of a given month and year! Many thanks to Bart Robinson for suggesting the "all" export option and the "decode_day()" and "decode_month()" functions. Also many thanks to Ron Savage for suggesting the incorporation of time calculations into this module. (Sorry that I didn't include the handling of time zones, which can be taken care of more easily by adding/subtracting the appropriate time value in an extra, preliminary step!) Many thanks to Jonathan Lemon for reporting the bug (and how to fix it!) concerning arrays as parameters, fixed in version 2.2! Many thanks to Tim Zingelman for reporting the problem fixed in version 2.3 and for testing an intermediate new version of this module on his machine! Many thanks to Jonas Liljegren for posting a subroutine for calculating easter monday in news:comp.lang.perl.modules and thereby triggering my writing of the new "Date::CalcLib" module which has been added in version 3.0 of the "Date::Calc" distribution. Also many thanks to Claus Tondering for his excellent web pages and FAQ in news:news.answers about calendars and how to calcu- late easter sunday. Thanks to Reinhold Stansich for posting a list of christian feast days and their offsets from easter sunday in news: comp.databases.ms-access and to Tammo Schnieder for sending me his posting. Many thanks to Max Ruffert at the Max Planck Institute for Astrophysics in Garching for looking up Gauss' Rule for calculating easter sunday (the algorithm which is implemented in the "Date::CalcLib" module) for me and dictating it to me over the phone! Many thanks to Chris Halverson for asking me "is there a "standard" way to create a calendar similar to the output of cal(1)?", which gave me the idea to write the function "calendar" which has been added to the module "DateCalcLib" in version 3.1, and also for the C code demonstrating how to use the C library "lib_date.c" stand-alone, because that was what he needed to do as well. Many thanks to Gunardi Wu for notifying me about the bug in the "Add_Delta_YMD()" function which was fixed in version 4.1. Thanks to the several people who notified me about two compiler warnings concerning incompatible character types in Calc.xs line 857 (added two casts in version 4.2 to fix this flaw). Many thanks to Alessio Bragadini for the patch he sent in to add Italian as one of the supported languages (version 4.3). Many thanks to Roland Titze and to Andrew Brown for pointing out the misspelling of "whether" (was: wether) throughout my documentation, corrected in version 5.0. Special thanks go to Tim Mueller-Seydlitz for notifying me about the inability of all string decoding routines to parse special ISO-Latin-1 characters correctly. Many thanks to Gisle Aas for many good suggestions and his patch for adding support for Norwegian. Many thanks to Jerker Nilsson for his patch for adding Swedish. Also many thanks to Masanao Izumo for raising the question of a "Delta_YMD()" function and for sending in patches. And last but not least many thanks to Slaven Rezic , Tobias Brox and Matthew Persico for suggesting date objects with overloaded operators, which were added in version 5.0. Many thanks to Tobias Brox again for the idea of supplying one set of comparison operators which compare only the date part, and another set of operators which compare date and time (or fall back to comparing only the date if both operands lack the time part). Many thanks to Jens Coldewey , Michael Niebler and Charles Lane for notifying me about the missing "#include " statement in DateCalc.c. Also many thanks to Frank Dabelstein for his patch for adding Danish. Thanks also go to Steve Tolkin for suggesting that I should emphasize in the README.txt file that the reading of the INSTALL.txt file is important, especially if running Perl under Windows. :-) Many thanks to Martin Vorlaender for notifying me about the problem with the linker on VMS with identifiers longer than 30 characters, and to Charles Lane for sending me a patch! Many thanks to Jarkko Hietaniemi for providing me with the necessary information to add Finnish (suomi). Many thanks to Graham Barr for his many good suggestions regarding how to generalize my original, very limited module (based on Carp.pm) which skips all packages belonging to the "Date::*" hierarchy (in order to generate an error message from the perspective of the caller), into a module that can be given a pattern (i.e., a regular expression) of package names to be skipped. Also many thanks for his suggestions of a name for this module and for lots of great code he sent! Also many many thanks to the innumerable contributors of the lists of American states and abbreviations and many countries' national holidays: List of U.S. American states and abbreviations courtesy of: Jack Applin Troy Arnold Larry Rosler Mark-Jason Dominus Charles Ford URLs concerning U.S. American states and abbreviations thereof sent by: Edward Cerruti Mark Badolato List of Canadian states and abbreviations courtesy of: Larry Rosler Geoff Baskwill List of U.S. American holidays courtesy of: David Cassell Larry Rosler Anthony Argyriou List of Canadian holidays courtesy of: M Lyons List of Norwegian holidays courtesy of: Gisle Aas (From his module "No::Dato" on CPAN) List of Swedish holidays courtesy of: Erland Sommarskog List of British holidays courtesy of: Jonathan Stowe Lists, hints, suggestions and URLs concerning different countries' holidays were sent to me by: Jihad Battikha Tim Rueger Mark-Jason Dominus Abe Timmerman Troy Arnold Mattias Engdegård Lincoln Yeoh Bart Lateur David Chapman Russ Allbery Ben Coleman Wolfgang Franzki Rainer Gratias Thanks to Nelson Ferrari for suggesting an alternative "Calendar()" function which starts on Sunday instead of Monday. Many thanks again to Martin Vorlaender for testing my modifications in order to satisfy the VMS linker (which was complaining about identifiers which were longer than 30 characters) and for his confirmation that now everything works (not counting some innocuous warnings from xsubpp)! Thanks a lot to Ramiro Morales for correcting my errors in Spanish (and for sending a patch)! And last but not least, many very special thanks for his tremendous work to J. David Eisenberg for writing a plain Perl version of Date::Calc 4.3, available from his home page at http://catcode.com/date/pcalc.html! (And also from my web site at http://www.engelschall.com/u/sb/download/ and my CPAN directory at http://www.perl.com/CPAN/authors/id/S/ST/STBEY/.) Many extra thanks to Bianca Taylor for exploring the mysteries of (and phoning up a lot of astounded state officials!) the australian holidays for me, as well as for sending me a list with the holidays of New Zealand; and many thanks also to her friend John Bolland for compiling this list for New Zealand in the first place! Many thanks to ??? ??? for sending me excellent feedback and suggestions. He for instance suggested the possibility to have individual formatting for different date objects, and the ability to import/export Unix "time" values. Many special thanks (k) to my girlfriend Ana Maria Lopes Monteiro for investigating the brazilian holidays and commemorative days for me! Very special thanks to the following people for helping in compiling and verifying the calendar profiles in Date::Calendar::Profiles: Abe Timmerman Abigail Aldo Calpini Andie Posey Arnaud Calvo Arturo Valdes Bart Lateur Brian Graham Bruno Tavares Cas Tuyn Cedric Bouvier David Landgren Dietmar Rietsch Don Simonetta Elizabeth Mattijsen Erland Sommarskog Flemming Mahler Larsen Francois Desarmenien Gordon Fletcher H. Merijn Brand Hendrik Van Belleghem Herbert Liechti Jean Forget Jigal van Hemert Johan Vromans Julien Quint Lars Ole Magnus Bodin Marco Hunn Mark Keehn Michele Beltrame Pat Waters Paul Fenwick Peter G. Martin Remco B. Brink Robert McArthur Stefaan Colson Stephane Rondal Wim Verhaegen Jabu Virginia Duma, Giant's Castle Lodge, Drakensberg, 3310 Estcourt, KwaZulu-Natal, South Africa Dirk Swart Hilda de Jager Hennie Meyer Pe. Amancio Inez Hiltrop Stephen Riehm Graham Crookham Philip Newton Many thanks to Sunny Paris for correcting the french date format in function "Date_to_Text_Long()"! Many grateful thanks to Nathaniel Irons for reporting a problem and for testing a possible solution on his machine regarding the inclusion of the file "patchlevel.h"! Many thanks to Daniel Crown for providing me with a list of argentinian holidays! Many thanks to Morten Sickel for reporting why Excel (erroneously) regards 1900 as a leap year, and why therefore one should use 31-Dec-1899 as the epoch for converting Excel date values. Many thanks to Georg Mavridis for providing me with the list of greek holidays. Many thanks also to Guenther Degenfelder for showing me his "Karl" calendar display program, which inspired me to write the example script "anniversaries.pl" (in the "examples" subdirectory of this distribution). Many special thanks to Thomas Wegner for porting version 5.0 of this module to MacOS and MacPerl. His port (plus some additions - see below) is now version 5.1. Thanks to Ken Clarke for his addition to the documentation concerning the function "Monday_of_Week()". Many thanks to Nora Elia Castillo for sending me the list of holidays for Mexico! Thanks to dLux (Balázs Tibor Szabó) for his much simpler formula in recipe #4 in the "Date::Calc" documentation. Thanks to Daniel Berger for suggesting a normalization method for delta vectors in Date::Calc::Object, which has been added in version 5.1. Thanks to Danny Rathjens for suggesting the improvement in the documentation of Date::Calc concerning the paragraph which says that ALL ranges start with 1 - except, of course, hours, minutes and seconds. Many thanks to Dr. John Stockton for notifying me about some spelling, naming and historical errors in the documentation of Date::Calc, which have been corrected in version 5.1. Many thanks to Slawomir Szmyd for sending me the patch to add Polish and the profile of polish holidays. Many thanks to Robert Kovacs for sending me the patch for adding Hungarian. Many thanks to Simon Perreault for sending me corrections for the Quebec/Canada profile in Date::Calendar. Thanks to Sercan Uslu for sending me the dates of the turkish holidays in 2002. Thanks to Ivor Blockley for asking for a way to compare dates which have a time part, and how to test whether two such dates are more or less than a given time interval apart - the solution to this problem is now recipe #3 in the Date::Calc documentation. Many thanks to Ian Zapczynski and to Felix Geerinckx for notifying me about a bug in the method "add_delta_workdays()" (Date::Calendar), which sometimes causes an incorrect result when adding a negative number of workdays. The bug hasn't been fixed yet, but there is a workaround which seems to remedy the problem: First add one workday to the date in question, and then subtract one workday more than initially. Many thanks to Mike Swieton (and many other people in the past) for sending in a patch so that ToolBox.h will compile with C++ compilers. Thanks to Joe Rice and Sridhar Gopal for pointing out that the formula for Labor Day in the U.S. apparently was wrong; it returned September 8th in 2003 but Labor Day in that year actually was on September 1st. It should obviously be "1/Mon/Sep" instead. Many thanks to M.S. Tawfik for finding a bug in the "init()" method of Date::Calendar::Year when the year starts with a Sunday (such as in 1995) and for sending a patch! Thanks to George Cooke for raising the question of how to "normalize" the results of the "Delta_YMD()" function to show only positive values, the answer to which has been included as a "recipe" in the documentation of Date::Calc. Thanks to Joachim Ansorg for sending me the necessary information to add Romanian to the list of languages supported by Date::Calc. Many thanks to Peter Prymmer for suggesting a work-around for the problems that can arise when a locale other than "C" is used! Thanks to Olle E. Johansson for sending corrections for the Swedish calendar profile. Thanks to Harold van Oostrom for sending in a fix for the Polish language in Date::Calc. Also many thanks for his patch to make Date::Calc ready for UTF-8, which unfortunately I haven't had the time yet to evaluate. Many thanks also to Sven Geisler for sending me corrections for the profile and official references for ALL federal states of Australia. Many thanks to Tony Mountifield for sending in a patch to enable Date::Calc to handle negative values of time_t, for dates before the Epoch. I decided not to include it at this time first because the system functions such as localtime, gmtime and mktime are considered legacy functions due to their rather restricted range (Date::Calc's own functions operate on a much broader range), and second because it cost so much effort to make these functions work in Date::Calc under Unix and Windows as well as under MacOS (Classic), that the risk of breaking things is just too high, not to mention the time and effort needed to get it right again, which I can't spend at the moment, unfortunately. So please use Date::Calc's own functions instead, which cover the intended range of dates anyway. Thanks a lot to Can Bican , Ziya Suzen , Henk Uijterwaal and the Amsterdam Perl Mongers for providing me with more detailed information concerning the "Bevrijdingsdag" (5th of May) in the Netherlands. Many thanks to Vetle Roeim for sending some more commemorative days (some companies give half a day off) for the Norwegian profile. Thanks a lot to Jesse Vincent and to Alistair Francis for reporting the ongoing problem with the boolean type in MacOS X and to Tatsuhiko Miyagawa (?) and Alistair Francis for providing patches. Thanks to Thanos Chatziathanassiou along with Barret Clark and Qiang (?) for suggesting some changes to the documentation. Sorry for not including the changes concerning the Orthodox and Julian calendars since these are outside of the scope of this module. Thanks to Anthony DeRobertis and Jonathan Yu for alerting me about the problem that in Date::Calendar and Date::Calendar::Year, it is hardcoded that Saturday and Sunday are holidays, and for asking to make this configurable. Many thanks to H. Merijn Brand for triggering the development of a new normalized date difference function. Many thanks to Marek Snowarski for raising my attention to the fact that the Polish names for the months and days of week were written wrongly. Many thanks to Piotr Wierzejewski for providing me with the correct spelling of the Polish names for the months and days of week in Unicode. Many thanks to H.Merijn Brand for discussing the various issues and advantages/disadvantages of integrating versus splitting the C/XS-part and the pure-Perl part of this distribution with me! Many thanks to Anthony Mirante for reporting that there can be a difference in the output of "Date::Calc::PP::Mktime()", "Date::Calc::XS::Mktime()" and "POSIX::mktime()", and for running a test script for me! ======================================================================== * README.txt ======================================================================== ==================================== Package "Date::Calc" Version 6.3 ==================================== Abstract: --------- This package provides all sorts of date calculations based on the Gregorian calendar (the one used in all western countries today). The package is designed as an efficient (and fast) toolbox, not a bulky ready-made application. It provides extensive documentation and examples of use, multi-language support and special functions for business needs. Moreover, it optionally provides an object-oriented interface with overloaded operators for greater convenience, and calendar objects which support profiles of legal holidays and observances for calculations which need to take those into account. What's new in version 6.3: -------------------------- + Changed "Mktime()" to use "POSIX::mktime()" + Fixed the bug that "Date::Calc::PP" was never tested when "Date::Calc::XS" is installed Copyright & License: -------------------- This package with all its parts is Copyright (c) 1995 - 2009 by Steffen Beyer. All rights reserved. This package is free software; you can use, modify and redistribute it under the same terms as Perl itself, i.e., at your option, under the terms either of the "Artistic License" or the "GNU General Public License". The C library at the core of the module "Date::Calc::XS" can, at your discretion, also be used, modified and redistributed under the terms of the "GNU Library General Public License". Please refer to the files "Artistic.txt", "GNU_GPL.txt" and "GNU_LGPL.txt" in the "license" subdirectory of this distribution for any details! Installation: ------------- perl Makefile.PL make make test make install UNINST=1 Under Windows, depending on your environment, use "nmake" or "dmake" instead of "make". Contact Author: --------------- Steffen Beyer http://www.engelschall.com/u/sb/download/ ======================================================================== * license/GNU_GPL.txt ======================================================================== GNU GENERAL PUBLIC LICENSE Version 2, June 1991 Copyright (C) 1989, 1991 Free Software Foundation, Inc. 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA Everyone is permitted to copy and distribute verbatim copies of this license document, but changing it is not allowed. Preamble The licenses for most software are designed to take away your freedom to share and change it. By contrast, the GNU General Public License is intended to guarantee your freedom to share and change free software--to make sure the software is free for all its users. This General Public License applies to most of the Free Software Foundation's software and to any other program whose authors commit to using it. (Some other Free Software Foundation software is covered by the GNU Library General Public License instead.) You can apply it to your programs, too. When we speak of free software, we are referring to freedom, not price. Our General Public Licenses are designed to make sure that you have the freedom to distribute copies of free software (and charge for this service if you wish), that you receive source code or can get it if you want it, that you can change the software or use pieces of it in new free programs; and that you know you can do these things. To protect your rights, we need to make restrictions that forbid anyone to deny you these rights or to ask you to surrender the rights. These restrictions translate to certain responsibilities for you if you distribute copies of the software, or if you modify it. For example, if you distribute copies of such a program, whether gratis or for a fee, you must give the recipients all the rights that you have. You must make sure that they, too, receive or can get the source code. And you must show them these terms so they know their rights. We protect your rights with two steps: (1) copyright the software, and (2) offer you this license which gives you legal permission to copy, distribute and/or modify the software. Also, for each author's protection and ours, we want to make certain that everyone understands that there is no warranty for this free software. If the software is modified by someone else and passed on, we want its recipients to know that what they have is not the original, so that any problems introduced by others will not reflect on the original authors' reputations. Finally, any free program is threatened constantly by software patents. We wish to avoid the danger that redistributors of a free program will individually obtain patent licenses, in effect making the program proprietary. To prevent this, we have made it clear that any patent must be licensed for everyone's free use or not licensed at all. The precise terms and conditions for copying, distribution and modification follow. GNU GENERAL PUBLIC LICENSE TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION 0. This License applies to any program or other work which contains a notice placed by the copyright holder saying it may be distributed under the terms of this General Public License. The "Program", below, refers to any such program or work, and a "work based on the Program" means either the Program or any derivative work under copyright law: that is to say, a work containing the Program or a portion of it, either verbatim or with modifications and/or translated into another language. (Hereinafter, translation is included without limitation in the term "modification".) Each licensee is addressed as "you". Activities other than copying, distribution and modification are not covered by this License; they are outside its scope. The act of running the Program is not restricted, and the output from the Program is covered only if its contents constitute a work based on the Program (independent of having been made by running the Program). Whether that is true depends on what the Program does. 1. You may copy and distribute verbatim copies of the Program's source code as you receive it, in any medium, provided that you conspicuously and appropriately publish on each copy an appropriate copyright notice and disclaimer of warranty; keep intact all the notices that refer to this License and to the absence of any warranty; and give any other recipients of the Program a copy of this License along with the Program. You may charge a fee for the physical act of transferring a copy, and you may at your option offer warranty protection in exchange for a fee. 2. 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If the distribution and/or use of the Program is restricted in certain countries either by patents or by copyrighted interfaces, the original copyright holder who places the Program under this License may add an explicit geographical distribution limitation excluding those countries, so that distribution is permitted only in or among countries not thus excluded. In such case, this License incorporates the limitation as if written in the body of this License. 9. The Free Software Foundation may publish revised and/or new versions of the General Public License from time to time. Such new versions will be similar in spirit to the present version, but may differ in detail to address new problems or concerns. Each version is given a distinguishing version number. If the Program specifies a version number of this License which applies to it and "any later version", you have the option of following the terms and conditions either of that version or of any later version published by the Free Software Foundation. If the Program does not specify a version number of this License, you may choose any version ever published by the Free Software Foundation. 10. If you wish to incorporate parts of the Program into other free programs whose distribution conditions are different, write to the author to ask for permission. For software which is copyrighted by the Free Software Foundation, write to the Free Software Foundation; we sometimes make exceptions for this. Our decision will be guided by the two goals of preserving the free status of all derivatives of our free software and of promoting the sharing and reuse of software generally. NO WARRANTY 11. BECAUSE THE PROGRAM IS LICENSED FREE OF CHARGE, THERE IS NO WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY APPLICABLE LAW. EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR OTHER PARTIES PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE PROGRAM IS WITH YOU. SHOULD THE PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF ALL NECESSARY SERVICING, REPAIR OR CORRECTION. 12. IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MAY MODIFY AND/OR REDISTRIBUTE THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS OF DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS), EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. END OF TERMS AND CONDITIONS How to Apply These Terms to Your New Programs If you develop a new program, and you want it to be of the greatest possible use to the public, the best way to achieve this is to make it free software which everyone can redistribute and change under these terms. To do so, attach the following notices to the program. It is safest to attach them to the start of each source file to most effectively convey the exclusion of warranty; and each file should have at least the "copyright" line and a pointer to where the full notice is found. Copyright (C) 19yy This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with this program; if not, write to the Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA Also add information on how to contact you by electronic and paper mail. If the program is interactive, make it output a short notice like this when it starts in an interactive mode: Gnomovision version 69, Copyright (C) 19yy name of author Gnomovision comes with ABSOLUTELY NO WARRANTY; for details type `show w'. This is free software, and you are welcome to redistribute it under certain conditions; type `show c' for details. The hypothetical commands `show w' and `show c' should show the appropriate parts of the General Public License. Of course, the commands you use may be called something other than `show w' and `show c'; they could even be mouse-clicks or menu items--whatever suits your program. You should also get your employer (if you work as a programmer) or your school, if any, to sign a "copyright disclaimer" for the program, if necessary. Here is a sample; alter the names: Yoyodyne, Inc., hereby disclaims all copyright interest in the program `Gnomovision' (which makes passes at compilers) written by James Hacker. , 1 April 1989 Ty Coon, President of Vice This General Public License does not permit incorporating your program into proprietary programs. If your program is a subroutine library, you may consider it more useful to permit linking proprietary applications with the library. If this is what you want to do, use the GNU Library General Public License instead of this License. ======================================================================== * license/GNU_LGPL.txt ======================================================================== GNU LIBRARY GENERAL PUBLIC LICENSE Version 2, June 1991 Copyright (C) 1991 Free Software Foundation, Inc. 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA Everyone is permitted to copy and distribute verbatim copies of this license document, but changing it is not allowed. [This is the first released version of the library GPL. It is numbered 2 because it goes with version 2 of the ordinary GPL.] Preamble The licenses for most software are designed to take away your freedom to share and change it. By contrast, the GNU General Public Licenses are intended to guarantee your freedom to share and change free software--to make sure the software is free for all its users. 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