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PERLGPL(1)			 Perl Programmers Reference Guide		       PERLGPL(1)

NAME
       perlgpl - the GNU General Public License, version 1

SYNOPSIS
	You can refer to this document in Pod via "L<perlgpl>"
	Or you can see this document by entering "perldoc perlgpl"

DESCRIPTION
       Perl is free software; you can redistribute it and/or modify it under the terms of either:

	       a) the GNU General Public License as published by the Free
	       Software Foundation; either version 1, or (at your option) any
	       later version, or

	       b) the "Artistic License" which comes with this Kit.

       This is the "GNU General Public License, version 1".  It's here so that modules, programs,
       etc., that want to declare this as their distribution license can link to it.

       For the Perl Artistic License, see perlartistic.

GNU GENERAL PUBLIC LICENSE
			   GNU GENERAL PUBLIC LICENSE
			    Version 1, February 1989

	 Copyright (C) 1989 Free Software Foundation, Inc.
			    51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA

	 Everyone is permitted to copy and distribute verbatim copies
	 of this license document, but changing it is not allowed.

				   Preamble

	  The license agreements of most software companies try to keep users
	at the mercy of those companies.  By contrast, our 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.	The
	General Public License applies to the Free Software Foundation's
	software and to any other program whose authors commit to using it.
	You can use it for your programs, too.

	  When we speak of free software, we are referring to freedom, not
	price.	Specifically, the General Public License is designed to make
	sure that you have the freedom to give away or sell copies of free
	software, 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 a 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 tell them 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.

	  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 Agreement 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 work containing the
	Program or a portion of it, either verbatim or with modifications.  Each
	licensee is addressed as "you".

	  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
	General Public License and to the absence of any warranty; and give any
	other recipients of the Program a copy of this General Public License
	along with the Program.  You may charge a fee for the physical act of
	transferring a copy.

	  2. You may modify your copy or copies of the Program or any portion of
	it, and copy and distribute such modifications under the terms of Paragraph
	1 above, provided that you also do the following:

	    a) cause the modified files to carry prominent notices stating that
	    you changed the files and the date of any change; and

	    b) cause the whole of any work that you distribute or publish, that
	    in whole or in part contains the Program or any part thereof, either
	    with or without modifications, to be licensed at no charge to all
	    third parties under the terms of this General Public License (except
	    that you may choose to grant warranty protection to some or all
	    third parties, at your option).

	    c) If the modified program normally reads commands interactively when
	    run, you must cause it, when started running for such interactive use
	    in the simplest and most usual way, to print or display an
	    announcement including an appropriate copyright notice and a notice
	    that there is no warranty (or else, saying that you provide a
	    warranty) and that users may redistribute the program under these
	    conditions, and telling the user how to view a copy of this General
	    Public License.

	    d) 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.

	Mere aggregation of another independent work with the Program (or its
	derivative) on a volume of a storage or distribution medium does not bring
	the other work under the scope of these terms.

	  3. You may copy and distribute the Program (or a portion or derivative of
	it, under Paragraph 2) in object code or executable form under the terms of
	Paragraphs 1 and 2 above provided that you also do one of the following:

	    a) accompany it with the complete corresponding machine-readable
	    source code, which must be distributed under the terms of
	    Paragraphs 1 and 2 above; or,

	    b) accompany it with a written offer, valid for at least three
	    years, to give any third party free (except for a nominal charge
	    for the cost of distribution) a complete machine-readable copy of the
	    corresponding source code, to be distributed under the terms of
	    Paragraphs 1 and 2 above; or,

	    c) accompany it with the information you received as to where the
	    corresponding source code may be obtained.	(This alternative is
	    allowed only for noncommercial distribution and only if you
	    received the program in object code or executable form alone.)

	Source code for a work means the preferred form of the work for making
	modifications to it.  For an executable file, complete source code means
	all the source code for all modules it contains; but, as a special
	exception, it need not include source code for modules which are standard
	libraries that accompany the operating system on which the executable
	file runs, or for standard header files or definitions files that
	accompany that operating system.

	  4. You may not copy, modify, sublicense, distribute or transfer the
	Program except as expressly provided under this General Public License.
	Any attempt otherwise to copy, modify, sublicense, distribute or transfer
	the Program is void, and will automatically terminate your rights to use
	the Program under this License.  However, parties who have received
	copies, or rights to use copies, from you under this General Public
	License will not have their licenses terminated so long as such parties
	remain in full compliance.

	  5. By copying, distributing or modifying the Program (or any work based
	on the Program) you indicate your acceptance of this license to do so,
	and all its terms and conditions.

	  6. Each time you redistribute the Program (or any work based on the
	Program), the recipient automatically receives a license from the original
	licensor to copy, distribute or modify the Program subject to these
	terms and conditions.  You may not impose any further restrictions on the
	recipients' exercise of the rights granted herein.

	  7. 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 the 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
	the license, you may choose any version ever published by the Free Software
	Foundation.

	  8. 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

	  9. 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.

	  10. 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

	       Appendix: 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 humanity, 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.

	    <one line to give the program's name and a brief idea of what it does.>
	    Copyright (C) 19yy	<name of author>

	    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 1, 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., 51 Franklin Street, Fifth Floor, Boston MA
	    02110-1301 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) 19xx 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 a sample; alter the names:

	  Yoyodyne, Inc., hereby disclaims all copyright interest in the
	  program 'Gnomovision' (a program to direct compilers to make passes
	  at assemblers) written by James Hacker.

	  <signature of Ty Coon>, 1 April 1989
	  Ty Coon, President of Vice

	That's all there is to it!

perl v5.16.3				    2013-03-04				       PERLGPL(1)
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