PR: Third Discussion Draft of GPLv3 Released

The Free Software Foundation (FSF) today released the third
discussion draft for version 3 of the most widely used free
software license, the GNU General Public License (GNU GPL).

Today’s draft incorporates the feedback received from the
general public, official discussion committees, and two
international conferences held in India and Japan. Many significant
changes have been made since the previous draft, released in July
2006. In recognition of this fact, the FSF now plans to publish one
additional draft before the final text of GPL version 3.

Changes in this draft include:

• First-time violators can have their license automatically
  restored if they remedy the problem within thirty days.
• License compatibility terms have been simplified, with the goal
  of making them easier to understand and administer.
• Manufacturers who include the software in consumer products
  must also provide installation information for the software along
  with the source. This change provides more narrow focus for
  requirements that were proposed in previous drafts.
• New patent requirements have been added to prevent distributors
  from colluding with patent holders to provide discriminatory
  protection from patents.

Richard Stallman, president of the FSF and principal author of
the GNU GPL, said, “The GPL was designed to ensure that all users
of a program receive the four essential freedoms which define free
software. These freedoms allow you to run the program as you see
fit, study and adapt it for your own purposes, redistribute copies
to help your neighbor, and release your improvements to the public.
The recent patent agreement between Microsoft and Novell aims to
undermine these freedoms. In this draft we have worked hard to
prevent such deals from making a mockery of free software.”

Today’s draft will be open for discussion for sixty days. The
FSF will solicit input in a wide array of public venues and make
changes as needed in response. After this period, it will release a
“last call” draft, followed by another thirty days for discussion
before the FSF’s board of directors approves the final text of GPL
version 3.

More information about this draft is available at
http://gplv3.fsf.org, including the full text, detailed
explanations of the latest changes, and new plans for finalizing
the license. As with the previous drafts, the FSF encourages
community members to provide feedback on the new draft at this
site.

GNU GENERAL PUBLIC LICENSE

Discussion Draft 3 of Version 3, 28 March 2007

THIS IS A DRAFT, NOT A PUBLISHED VERSION OF THE GNU GENERAL
PUBLIC LICENSE.

Copyright (C) 2007 Free Software Foundation, Inc.
(http://fsf.org)
51 Franklin Street, 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 GNU General Public License is a free, copyleft license for
software and other kinds of works.

The licenses for most software and other practical works are
designed to take away your freedom to share and change the works.
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. We, the Free Software
Foundation, use the GNU General Public License for most of our
software; it applies also to any other program whose authors commit
to using it. 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 requirements that forbid
anyone to deny you these rights or to ask you to surrender the
rights. Therefore, you have certain responsibilities 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 pass on to the recipients the same
freedoms that you received. 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.

Developers that use the GNU GPL protect your rights with two
steps: (1) assert copyright on the software, and (2) offer you this
License which gives you legal permission to copy, distribute and/or
modify the software.

For the developers’ and authors’ protection, the GPL clearly
explains that there is no warranty for this free software. For both
users’ and authors’ sake, the GPL requires that modified versions
be marked as changed, so that their problems will not be associated
erroneously with the previous versions.

Some devices are designed to deny users access to install or run
modified versions of the software inside them, although the
manufacturer can do so. This is fundamentally incompatible with the
purpose of the GPL, which is to protect users’ freedom to change
the software where changes are possible. The systematic pattern of
such abuse occurs in the area of products for individuals to use,
which is precisely where it is most unacceptable. Therefore, we
have designed this version of the GPL to prohibit the practice for
those products. If such problems arise substantially in other
domains, we stand ready to extend this provision to those domains
in future versions of the GPL, as needed to protect the freedom of
users.

Finally, every program is threatened constantly by software
patents. States should not allow patents to restrict development
and use of software on general-purpose computers, but in places
where they do, we wish to avoid the special danger that patents
applied to a free program could make it effectively proprietary. To
prevent this, the GPL assures that patents cannot be used to render
the program non-free.

The precise terms and conditions for copying, distribution and
modification follow.

TERMS AND CONDITIONS

0. Definitions.

“This License” refers to version 3 of the GNU General Public
License.

“Copyright” also means copyright-like laws that apply to other
kinds of works, such as semiconductor masks.

“The Program” refers to any copyrightable work licensed under
this License. Each licensee is addressed as “you.” “Licensees” and
“recipients” may be individuals or organizations.

To “modify” a work means to copy from or adapt all or part of
the work in a fashion requiring copyright permission, other than
the making of a verbatim copy. The resulting work is called a
“modified version” of the earlier work or a work “based on” the
earlier work. A “covered work” means either the unmodified Program
or a work based on the Program.

A “contributor” is a party who licenses under this License a
work on which the Program is based. Such a work is called the
party’s “contribution.”

To “propagate” a work means to do (or cause others to do)
anything with it that requires permission under applicable
copyright law, except executing it on a computer or making
modifications that you do not share. Propagation includes copying,
distribution (with or without modification), making available to
the public, and in some countries other activities as well. To
“convey” a work means any kind of propagation that enables other
parties to make or receive copies, excluding sublicensing. Mere
interaction with a user through a computer network, with no
transfer of a copy, is not conveying.

A party’s “essential patent claims” in a work are all patent
claims owned or controlled by the party, whether already acquired
or hereafter acquired, that would be infringed by some manner,
permitted by this License, of making, using, or selling the work,
but do not include claims that would be infringed only as a
consequence of further modification of the work. For purposes of
this definition, “control” includes the right to grant sublicenses
in a manner consistent with the requirements of this License.

1. Source Code.

The “source code” for a work means the preferred form of the
work for making modifications to it. “Object code” means any
non-source form of a work.

A “Standard Interface” means an interface that either is an
official standard defined by a recognized standards body, or, in
the case of interfaces specified for a particular programming
language, one that is widely used among developers working in that
language.

The “System Libraries” of an executable work include anything,
other than the work as a whole, that (a) is normally included in
the distribution of a Major Component, but which is not part of
that Major Component, and (b) serves only to enable use of the work
with that Major Component, or to implement a Standard Interface for
which an implementation is available to the public in source code
form. A “Major Component”, in this context, means a major essential
component (kernel, window system, and so on) of the specific
operating system (if any) on which the executable work runs, or a
compiler used to produce the work, or an object code interpreter
used to run it.

The “Corresponding Source” for a work in object code form means
all the source code needed to generate, install, and (for an
executable work) run the object code and to modify the work,
including scripts to control those activities. However, it does not
include the work’s System Libraries, or general-purpose tools or
generally available free programs which are used unmodified in
performing those activities but which are not part of the work. For
example, Corresponding Source includes interface definition files
associated with source files for the work, and the source code for
shared libraries and dynamically linked subprograms that the work
is specifically designed to require, such as by intimate data
communication or control flow between those subprograms and other
parts of the work.

The Corresponding Source need not include anything that users
can regenerate automatically from other parts of the Corresponding
Source.

The Corresponding Source for a work in source code form is that
same work.

2. Basic Permissions.

All rights granted under this License are granted for the term
of copyright on the Program, and are irrevocable provided the
stated conditions are met. This License explicitly affirms your
unlimited permission to run the unmodified Program. The output from
running a covered work is covered by this License only if the
output, given its content, constitutes a covered work. This License
acknowledges your rights of fair use or other equivalent, as
provided by copyright law.

Propagation of covered works that you do not convey, and making
modified versions of the Program that you do not convey, are
permitted without conditions, so long as your license otherwise
remains in force. Conveying is permitted under the conditions
stated below. Sublicensing is not allowed; section 10 makes it
unnecessary.

3. No Denying Users’ Rights through Technical Measures.

No covered work shall be deemed part of an effective
technological measure under any applicable law fulfilling
obligations under article 11 of the WIPO copyright treaty adopted
on 20 December 1996, or similar laws prohibiting or restricting
circumvention of such measures.

When you convey a covered work, you waive any legal power to
forbid circumvention of technical measures to the extent such
circumvention is effected by exercising rights under this License
with respect to the covered work, and you disclaim any intention to
limit operation or modification of the work as a means of
enforcing, against the work’s users, your or third parties’ legal
rights to forbid circumvention of technical measures.

4.[1] Conveying Verbatim Copies.

You may convey 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;
keep intact all notices stating that this License and any
non-permissive terms added in accord with section 7 apply to the
code; keep intact all notices of the absence of any warranty; and
give all recipients a copy of this License along with the
Program.

You may charge any price or no price for each copy that you
convey, and you may offer support or warranty protection for a
fee.

5.[2] Conveying Modified Source Versions.

You may convey a work based on the Program, or the modifications
to produce it from the Program, in the form of source code under
the terms of section 4 above, provided that you also meet all of
these conditions:

• a) The work must carry prominent notices stating that you
  modified it, and giving a relevant date.
• b) The work must carry prominent notices stating that it is
  released under this License and any conditions added under section
  7. This requirement modifies the requirement in section 4 to “keep
  intact all notices”.
• c) You must license the entire work, as a whole, under this
  License to anyone who comes into possession of a copy. This License
  will therefore apply, unmodified except as permitted by section 7,
  to the whole of the work, and all its parts, regardless of how they
  are packaged. This License gives no permission to license the work
  in any other way, but it does not invalidate such permission if you
  have separately received it.
• d) If the work has interactive user interfaces, each must
  include a convenient feature that displays an appropriate copyright
  notice, and tells the user that there is no warranty for the work
  (unless you provide a warranty), that licensees may convey the work
  under this License, and how to view a copy of this License.
  Specifically, if the interface presents a list of user commands or
  options, such as a menu, a command to display this information must
  be prominent in the list; otherwise, the work must display this
  information at startup. However, if the Program has interactive
  interfaces that do not comply with this subsection, your work need
  not make them comply.

A compilation of a covered work with other separate and
independent works, which are not by their nature extensions of the
covered work, in or on a volume of a storage or distribution
medium, is called an “aggregate” if the compilation and its
resulting copyright are not used to limit the access or legal
rights of the compilation’s users beyond what the individual works
permit. Inclusion of a covered work in an aggregate does not cause
this License to apply to the other parts of the aggregate.

6.[3] Conveying Non-Source Forms.

You may convey a covered work in object code form under the
terms of sections 4 and 5, provided that you also convey the
machine-readable Corresponding Source under the terms of this
License, in one of these ways:

• a) Convey the object code in, or embodied in, a physical
  product (including a physical distribution medium), accompanied by
  the Corresponding Source fixed on a durable physical medium
  customarily used for software interchange.
• b) Convey the object code in, or embodied in, a physical
  product (including a physical distribution medium), accompanied by
  a written offer, valid for at least three years and valid for as
  long as you offer spare parts or customer support for that product
  model, either (1) to give anyone who possesses the object code a
  copy of the Corresponding Source for all the software in the
  product that is covered by this License, on a durable physical
  medium customarily used for software interchange, for a price no
  more than your reasonable cost of physically performing this
  conveying of source, or (2) to provide access to copy the
  Corresponding Source from a network server at no charge.
• c) Convey individual copies of the object code with a copy of
  the written offer to provide the Corresponding Source. This
  alternative is allowed only occasionally and noncommercially, and
  only if you received the object code with such an offer, in accord
  with subsection 6b.
• d) Convey the object code by offering access from a designated
  place (gratis or for a charge), and offer equivalent access to the
  Corresponding Source in the same way through the same place at no
  further charge. You need not require recipients to copy the
  Corresponding Source along with the object code. If the place to
  copy the object code is a network server, the Corresponding Source
  may be on a different server (operated by you or a third party)
  that supports equivalent copying facilities, provided you maintain
  clear directions next to the object code saying where to find the
  Corresponding Source. Regardless of what server hosts the
  Corresponding Source, you remain obligated to ensure that it is
  available for as long as needed to satisfy these requirements.
• e) Convey the object code using peer-to-peer transmission,
  provided you inform other peers where the object code and
  Corresponding Source of the work are being offered to the general
  public at no charge under subsection 6d.

A separable portion of the object code, whose source code is
excluded from the Corresponding Source as a System Library, need
not be included in conveying the object code work.

A “User Product” is either (1) a “consumer product”, which means
any tangible personal property which is normally used for personal,
family, or household purposes, or (2) anything designed or sold for
incorporation into a dwelling. [In cases of doubt concerning
whether an item is a “consumer product”, the interpretation of the
Magnuson-Moss Warranty Act, 15 U.S.C. 2301 et seq., shall provide
the basis for interpretation, regardless of the choice of law
determination for this License as a whole.]

“Installation Information” for a User Product means any methods,
procedures, authorization keys, or other information required to
install and execute modified versions of a covered work in that
User Product from a modified version of its Corresponding Source.
The information must suffice to ensure that the continued
functioning of the modified object code is in no case prevented or
interfered with solely because modification has been made.

If you convey an object code work under this section in, or
with, or specifically for use in, a User Product, and the conveying
occurs as part of a transaction in which the right of possession
and use of the User Product is transferred to the recipient in
perpetuity or for a fixed term (regardless of how the transaction
is characterized), the Corresponding Source conveyed under this
section must be accompanied by the Installation Information. But
this requirement does not apply if neither you nor any third party
retains the ability to install modified object code on the User
Product (for example, the work has been installed in ROM).

The requirement to provide Installation Information does not
include a requirement to continue to provide support service,
warranty, or updates for a work that has been modified or installed
by the recipient. Network access may be denied when the
modification itself materially and adversely affects the operation
of the network or violates the rules and protocols for
communication across the network.

Corresponding Source conveyed, and Installation Information
provided, in accord with this section must be in a format that is
publicly documented, with an implementation available to the public
in source code form, and must require no special password or key
for unpacking, reading or copying.

7. Additional Terms.

“Additional permissions” are terms that supplement the terms of
this License by making exceptions from one or more of its
conditions. Additional permissions that are applicable to the
entire Program shall be treated as though they were included in
this License, to the extent that they are valid under applicable
law. If additional permissions apply only to part of the Program,
that part may be used separately under those permissions, but the
entire Program remains governed by this License without regard to
the additional permissions.

When you convey a copy of a covered work, you may at your option
remove any additional permissions from that copy, or from any part
of it. (Additional permissions may be written to require their own
removal in certain cases when you modify the work.) You may place
additional permissions on material, added by you to a covered work,
for which you have or can give appropriate copyright
permission.

Notwithstanding any other provision of this License, you may
supplement the terms of this License with terms effective under, or
drafted for compatibility with, local law:

• a. disclaiming warranty or limiting liability differently from
  the terms of section 15 of this License; or
• b. requiring preservation of specified reasonable legal notices
  or author attributions in source or object code forms of material
  added by you to a covered work; or
• c. prohibiting misrepresentation of the origin of material
  added by you to a covered work, or requiring that modified versions
  of such material be marked in reasonable ways as different from the
  original version; or
• d. limiting the use for publicity purposes of specified names
  of licensors or authors, or of specified trade names, trademarks,
  or service marks, to the extent otherwise permitted by law.

All other non-permissive additional terms are considered
“further restrictions” within the meaning of section 10. If the
Program as you received it, or any part of it, purports to be
governed by this License, supplemented by a term that is a further
restriction, you may remove that term. If a license document
contains a further restriction but permits relicensing or conveying
under this License, you may add to a covered work material governed
by the terms of that license document, provided that the further
restriction does not survive such relicensing or conveying.

If you add terms to a covered work in accord with this section,
you must place, in the relevant source files, a statement of the
additional terms that apply to those files, or a notice indicating
where to find the applicable terms.

8.[4] Termination.

You may not propagate or modify a covered work except as
expressly provided under this License. Any attempt otherwise to
propagate or modify it is void. If you violate this License, any
copyright holder may put you on notice by notifying you of the
violation, by any reasonable means, provided 60 days have not
elapsed since the most recent violation. Having put you on notice,
the copyright holder may, at any time, terminate the rights
(including any patent rights) that the copyright holder has granted
to you under this License.

However, if this is your first violation of this License with
respect to a given copyright holder, and you cure the violation
within 30 days following your receipt of the notice, then your
license is automatically reinstated.

In the event that your rights are terminated under this section,
parties who have received copies, or rights, from you under this
License will not have their licenses terminated so long as they
remain in full compliance.

9.[5] Acceptance Not Required for Having Copies.

You are not required to accept this License in order to receive
or run a copy of the Program. Ancillary propagation of a covered
work occurring solely as a consequence of using peer-to-peer
transmission to receive a copy likewise does not require
acceptance. However, nothing other than this License grants you
permission to propagate or modify any covered work. These actions
infringe copyright if you do not accept this License. Therefore, by
modifying or propagating a covered work, you indicate your
acceptance of this License to do so.

10.[6] Automatic Licensing of Downstream Recipients.

Each time you convey a covered work, the recipient automatically
receives a license from the original licensors, to run, modify and
propagate that work, subject to this License. You are not
responsible for enforcing compliance by third parties with this
License.

An “entity transaction” is a transaction transferring control of
an organization, or substantially all assets of one, or subdividing
an organization, or merging organizations. If propagation of a
covered work results from an entity transaction, each party to that
transaction who receives a copy of the work also receives whatever
licenses to the work the party’s predecessor in interest had or
could give under the previous paragraph, plus a right to possession
of the Corresponding Source of the work from the predecessor in
interest.

You may not impose any further restrictions on the exercise of
the rights granted or affirmed under this License. For example, you
may not impose a license fee, royalty, or other charge for exercise
of rights granted under this License, and you may not initiate
litigation (including a cross-claim or counterclaim in a lawsuit)
alleging that any patent claim is infringed by making, using,
selling, offering for sale, or importing the Program (or the
contribution of any contributor).

11. Patents.

Each contributor grants you a non-exclusive, worldwide,
royalty-free patent license under the contributor’s essential
patent claims in its contribution, to make, use, sell, offer for
sale, import and otherwise run, modify and propagate the
contribution.

For purposes of the following three paragraphs, a “patent
license” means a patent license, a covenant not to bring suit for
patent infringement, or any other express agreement or commitment,
however denominated, not to enforce a patent.

If you convey a covered work, knowingly relying on a patent
license, and the Corresponding Source of the work is not available
for anyone to copy, free of charge and under the terms of this
License, through a publicly available network server or other
readily accessible means, then you must either (1) cause the
Corresponding Source to be so available, or (2) disclaim the patent
license for this particular work, or (3) arrange, in a manner
consistent with the requirements of this License, to extend the
patent license to downstream recipients. “Knowingly relying” means
you have actual knowledge that, but for the patent license, your
conveying the covered work in a country, or your recipient’s use of
the covered work in a country, would infringe one or more
identifiable patents in that country that you have reason to
believe are valid.

If, pursuant to or in connection with a single transaction or
arrangement, you convey, or propagate by procuring conveyance of, a
covered work, and grant a patent license providing freedom to use,
propagate, modify or convey a specific copy of the covered work to
any of the parties receiving the covered work, then the patent
license you grant is automatically extended to all recipients of
the covered work and works based on it.

You may not convey a covered work if you are a party to an
arrangement with a third party that is in the business of
distributing software, under which you make payment to the third
party based on the extent of your activity of conveying the work,
and under which the third party grants, to any of the parties who
would receive the covered work from you, a patent license (a) in
connection with copies of the covered work conveyed by you, and/or
copies made from those, or (b) primarily for and in connection with
specific products or compilations that contain the covered work,
which license does not cover, prohibits the exercise of, or is
conditioned on the non-exercise of any of the rights that are
specifically granted to recipients of the covered work under this
License[, unless you entered into that arrangement, or that patent
license was granted, prior to March 28, 2007].

Nothing in this License shall be construed as excluding or
limiting any implied license or other defenses to infringement that
may otherwise be available to you under applicable patent law.

12.[7] No Surrender of Others’ Freedom.

If conditions are imposed on you (whether by court order,
agreement or otherwise) that contradict the conditions of this
License, they do not excuse you from the conditions of this
License. If you cannot convey the Program, or other covered work,
so as to satisfy simultaneously your obligations under this License
and any other pertinent obligations, then as a consequence you may
not convey it at all. For example, if you agree to terms that
obligate you to collect a royalty for further conveying from those
to whom you convey the Program, the only way you could satisfy both
those terms and this License would be to refrain entirely from
conveying the Program.

13. Use with the Affero General Public License.

Notwithstanding any other provision of this License, you have
permission to link any covered work with a work licensed under
version 2 of the Affero General Public License, and to convey the
resulting combination. The terms of this License will continue to
apply to your covered work but will not apply to the work with
which it is linked, which will remain governed by the Affero
General Public License.

14.[9] Revised Versions of this License.

The Free Software Foundation may publish revised and/or new
versions of the GNU 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 that a certain numbered version of the GNU
General Public License “or any later version” applies to it, you
have the option of following the terms and conditions either of
that numbered version or of any later version published by the Free
Software Foundation. If the Program does not specify a version
number of the GNU General Public License, you may choose any
version ever published by the Free Software Foundation.

If the Program specifies that a proxy can decide whether future
versions of the GNU General Public License shall apply, that
proxy’s public statement of acceptance of any version is permanent
authorization for you to choose that version for the Program.

15.[11, 12] Disclaimer of Warranty and Limitation of
Liability.

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.

IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN
WRITING WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES
AND/OR CONVEYS 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.

If the disclaimer of warranty and limitation of liability
provided above cannot be given local legal effect according to
their terms, reviewing courts shall apply local law that most
closely approximates an absolute waiver of all civil liability in
connection with the Program, unless a warranty or assumption of
liability accompanies a copy of the Program in return for a
fee.

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 state 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)   

    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 3 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, see http://www.gnu.org/licenses
    or 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 does terminal interaction, make it output a short
notice like this when it starts in an interactive mode:

    Gnomovision version 69, Copyright (C) year  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’; for a GUI interface, you would use an “About box”
instead.

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

For more information on how to apply and follow the GNU GPL, see
http://www.gnu.org/licenses.

The GNU 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 Lesser General Public License instead
of this License.