ExportPDF

Annotated docs/LICENCE.txt

5:5e8fd72988c8
2013-11-03 Paul Boddie Updated dependency information.
paul@0 1
		    GNU GENERAL PUBLIC LICENSE
paul@0 2
		       Version 2, June 1991
paul@0 3
paul@0 4
 Copyright (C) 1989, 1991 Free Software Foundation, Inc.,
paul@0 5
 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
paul@0 6
 Everyone is permitted to copy and distribute verbatim copies
paul@0 7
 of this license document, but changing it is not allowed.
paul@0 8
paul@0 9
			    Preamble
paul@0 10
paul@0 11
  The licenses for most software are designed to take away your
paul@0 12
freedom to share and change it.  By contrast, the GNU General Public
paul@0 13
License is intended to guarantee your freedom to share and change free
paul@0 14
software--to make sure the software is free for all its users.  This
paul@0 15
General Public License applies to most of the Free Software
paul@0 16
Foundation's software and to any other program whose authors commit to
paul@0 17
using it.  (Some other Free Software Foundation software is covered by
paul@0 18
the GNU Lesser General Public License instead.)  You can apply it to
paul@0 19
your programs, too.
paul@0 20
paul@0 21
  When we speak of free software, we are referring to freedom, not
paul@0 22
price.  Our General Public Licenses are designed to make sure that you
paul@0 23
have the freedom to distribute copies of free software (and charge for
paul@0 24
this service if you wish), that you receive source code or can get it
paul@0 25
if you want it, that you can change the software or use pieces of it
paul@0 26
in new free programs; and that you know you can do these things.
paul@0 27
paul@0 28
  To protect your rights, we need to make restrictions that forbid
paul@0 29
anyone to deny you these rights or to ask you to surrender the rights.
paul@0 30
These restrictions translate to certain responsibilities for you if you
paul@0 31
distribute copies of the software, or if you modify it.
paul@0 32
paul@0 33
  For example, if you distribute copies of such a program, whether
paul@0 34
gratis or for a fee, you must give the recipients all the rights that
paul@0 35
you have.  You must make sure that they, too, receive or can get the
paul@0 36
source code.  And you must show them these terms so they know their
paul@0 37
rights.
paul@0 38
paul@0 39
  We protect your rights with two steps: (1) copyright the software, and
paul@0 40
(2) offer you this license which gives you legal permission to copy,
paul@0 41
distribute and/or modify the software.
paul@0 42
paul@0 43
  Also, for each author's protection and ours, we want to make certain
paul@0 44
that everyone understands that there is no warranty for this free
paul@0 45
software.  If the software is modified by someone else and passed on, we
paul@0 46
want its recipients to know that what they have is not the original, so
paul@0 47
that any problems introduced by others will not reflect on the original
paul@0 48
authors' reputations.
paul@0 49
paul@0 50
  Finally, any free program is threatened constantly by software
paul@0 51
patents.  We wish to avoid the danger that redistributors of a free
paul@0 52
program will individually obtain patent licenses, in effect making the
paul@0 53
program proprietary.  To prevent this, we have made it clear that any
paul@0 54
patent must be licensed for everyone's free use or not licensed at all.
paul@0 55
paul@0 56
  The precise terms and conditions for copying, distribution and
paul@0 57
modification follow.
paul@0 58
paul@0 59
		    GNU GENERAL PUBLIC LICENSE
paul@0 60
   TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION
paul@0 61
paul@0 62
  0. This License applies to any program or other work which contains
paul@0 63
a notice placed by the copyright holder saying it may be distributed
paul@0 64
under the terms of this General Public License.  The "Program", below,
paul@0 65
refers to any such program or work, and a "work based on the Program"
paul@0 66
means either the Program or any derivative work under copyright law:
paul@0 67
that is to say, a work containing the Program or a portion of it,
paul@0 68
either verbatim or with modifications and/or translated into another
paul@0 69
language.  (Hereinafter, translation is included without limitation in
paul@0 70
the term "modification".)  Each licensee is addressed as "you".
paul@0 71
paul@0 72
Activities other than copying, distribution and modification are not
paul@0 73
covered by this License; they are outside its scope.  The act of
paul@0 74
running the Program is not restricted, and the output from the Program
paul@0 75
is covered only if its contents constitute a work based on the
paul@0 76
Program (independent of having been made by running the Program).
paul@0 77
Whether that is true depends on what the Program does.
paul@0 78
paul@0 79
  1. You may copy and distribute verbatim copies of the Program's
paul@0 80
source code as you receive it, in any medium, provided that you
paul@0 81
conspicuously and appropriately publish on each copy an appropriate
paul@0 82
copyright notice and disclaimer of warranty; keep intact all the
paul@0 83
notices that refer to this License and to the absence of any warranty;
paul@0 84
and give any other recipients of the Program a copy of this License
paul@0 85
along with the Program.
paul@0 86
paul@0 87
You may charge a fee for the physical act of transferring a copy, and
paul@0 88
you may at your option offer warranty protection in exchange for a fee.
paul@0 89
paul@0 90
  2. You may modify your copy or copies of the Program or any portion
paul@0 91
of it, thus forming a work based on the Program, and copy and
paul@0 92
distribute such modifications or work under the terms of Section 1
paul@0 93
above, provided that you also meet all of these conditions:
paul@0 94
paul@0 95
    a) You must cause the modified files to carry prominent notices
paul@0 96
    stating that you changed the files and the date of any change.
paul@0 97
paul@0 98
    b) You must cause any work that you distribute or publish, that in
paul@0 99
    whole or in part contains or is derived from the Program or any
paul@0 100
    part thereof, to be licensed as a whole at no charge to all third
paul@0 101
    parties under the terms of this License.
paul@0 102
paul@0 103
    c) If the modified program normally reads commands interactively
paul@0 104
    when run, you must cause it, when started running for such
paul@0 105
    interactive use in the most ordinary way, to print or display an
paul@0 106
    announcement including an appropriate copyright notice and a
paul@0 107
    notice that there is no warranty (or else, saying that you provide
paul@0 108
    a warranty) and that users may redistribute the program under
paul@0 109
    these conditions, and telling the user how to view a copy of this
paul@0 110
    License.  (Exception: if the Program itself is interactive but
paul@0 111
    does not normally print such an announcement, your work based on
paul@0 112
    the Program is not required to print an announcement.)
paul@0 113
paul@0 114
These requirements apply to the modified work as a whole.  If
paul@0 115
identifiable sections of that work are not derived from the Program,
paul@0 116
and can be reasonably considered independent and separate works in
paul@0 117
themselves, then this License, and its terms, do not apply to those
paul@0 118
sections when you distribute them as separate works.  But when you
paul@0 119
distribute the same sections as part of a whole which is a work based
paul@0 120
on the Program, the distribution of the whole must be on the terms of
paul@0 121
this License, whose permissions for other licensees extend to the
paul@0 122
entire whole, and thus to each and every part regardless of who wrote it.
paul@0 123
paul@0 124
Thus, it is not the intent of this section to claim rights or contest
paul@0 125
your rights to work written entirely by you; rather, the intent is to
paul@0 126
exercise the right to control the distribution of derivative or
paul@0 127
collective works based on the Program.
paul@0 128
paul@0 129
In addition, mere aggregation of another work not based on the Program
paul@0 130
with the Program (or with a work based on the Program) on a volume of
paul@0 131
a storage or distribution medium does not bring the other work under
paul@0 132
the scope of this License.
paul@0 133
paul@0 134
  3. You may copy and distribute the Program (or a work based on it,
paul@0 135
under Section 2) in object code or executable form under the terms of
paul@0 136
Sections 1 and 2 above provided that you also do one of the following:
paul@0 137
paul@0 138
    a) Accompany it with the complete corresponding machine-readable
paul@0 139
    source code, which must be distributed under the terms of Sections
paul@0 140
    1 and 2 above on a medium customarily used for software interchange; or,
paul@0 141
paul@0 142
    b) Accompany it with a written offer, valid for at least three
paul@0 143
    years, to give any third party, for a charge no more than your
paul@0 144
    cost of physically performing source distribution, a complete
paul@0 145
    machine-readable copy of the corresponding source code, to be
paul@0 146
    distributed under the terms of Sections 1 and 2 above on a medium
paul@0 147
    customarily used for software interchange; or,
paul@0 148
paul@0 149
    c) Accompany it with the information you received as to the offer
paul@0 150
    to distribute corresponding source code.  (This alternative is
paul@0 151
    allowed only for noncommercial distribution and only if you
paul@0 152
    received the program in object code or executable form with such
paul@0 153
    an offer, in accord with Subsection b above.)
paul@0 154
paul@0 155
The source code for a work means the preferred form of the work for
paul@0 156
making modifications to it.  For an executable work, complete source
paul@0 157
code means all the source code for all modules it contains, plus any
paul@0 158
associated interface definition files, plus the scripts used to
paul@0 159
control compilation and installation of the executable.  However, as a
paul@0 160
special exception, the source code distributed need not include
paul@0 161
anything that is normally distributed (in either source or binary
paul@0 162
form) with the major components (compiler, kernel, and so on) of the
paul@0 163
operating system on which the executable runs, unless that component
paul@0 164
itself accompanies the executable.
paul@0 165
paul@0 166
If distribution of executable or object code is made by offering
paul@0 167
access to copy from a designated place, then offering equivalent
paul@0 168
access to copy the source code from the same place counts as
paul@0 169
distribution of the source code, even though third parties are not
paul@0 170
compelled to copy the source along with the object code.
paul@0 171
paul@0 172
  4. You may not copy, modify, sublicense, or distribute the Program
paul@0 173
except as expressly provided under this License.  Any attempt
paul@0 174
otherwise to copy, modify, sublicense or distribute the Program is
paul@0 175
void, and will automatically terminate your rights under this License.
paul@0 176
However, parties who have received copies, or rights, from you under
paul@0 177
this License will not have their licenses terminated so long as such
paul@0 178
parties remain in full compliance.
paul@0 179
paul@0 180
  5. You are not required to accept this License, since you have not
paul@0 181
signed it.  However, nothing else grants you permission to modify or
paul@0 182
distribute the Program or its derivative works.  These actions are
paul@0 183
prohibited by law if you do not accept this License.  Therefore, by
paul@0 184
modifying or distributing the Program (or any work based on the
paul@0 185
Program), you indicate your acceptance of this License to do so, and
paul@0 186
all its terms and conditions for copying, distributing or modifying
paul@0 187
the Program or works based on it.
paul@0 188
paul@0 189
  6. Each time you redistribute the Program (or any work based on the
paul@0 190
Program), the recipient automatically receives a license from the
paul@0 191
original licensor to copy, distribute or modify the Program subject to
paul@0 192
these terms and conditions.  You may not impose any further
paul@0 193
restrictions on the recipients' exercise of the rights granted herein.
paul@0 194
You are not responsible for enforcing compliance by third parties to
paul@0 195
this License.
paul@0 196
paul@0 197
  7. If, as a consequence of a court judgment or allegation of patent
paul@0 198
infringement or for any other reason (not limited to patent issues),
paul@0 199
conditions are imposed on you (whether by court order, agreement or
paul@0 200
otherwise) that contradict the conditions of this License, they do not
paul@0 201
excuse you from the conditions of this License.  If you cannot
paul@0 202
distribute so as to satisfy simultaneously your obligations under this
paul@0 203
License and any other pertinent obligations, then as a consequence you
paul@0 204
may not distribute the Program at all.  For example, if a patent
paul@0 205
license would not permit royalty-free redistribution of the Program by
paul@0 206
all those who receive copies directly or indirectly through you, then
paul@0 207
the only way you could satisfy both it and this License would be to
paul@0 208
refrain entirely from distribution of the Program.
paul@0 209
paul@0 210
If any portion of this section is held invalid or unenforceable under
paul@0 211
any particular circumstance, the balance of the section is intended to
paul@0 212
apply and the section as a whole is intended to apply in other
paul@0 213
circumstances.
paul@0 214
paul@0 215
It is not the purpose of this section to induce you to infringe any
paul@0 216
patents or other property right claims or to contest validity of any
paul@0 217
such claims; this section has the sole purpose of protecting the
paul@0 218
integrity of the free software distribution system, which is
paul@0 219
implemented by public license practices.  Many people have made
paul@0 220
generous contributions to the wide range of software distributed
paul@0 221
through that system in reliance on consistent application of that
paul@0 222
system; it is up to the author/donor to decide if he or she is willing
paul@0 223
to distribute software through any other system and a licensee cannot
paul@0 224
impose that choice.
paul@0 225
paul@0 226
This section is intended to make thoroughly clear what is believed to
paul@0 227
be a consequence of the rest of this License.
paul@0 228
paul@0 229
  8. If the distribution and/or use of the Program is restricted in
paul@0 230
certain countries either by patents or by copyrighted interfaces, the
paul@0 231
original copyright holder who places the Program under this License
paul@0 232
may add an explicit geographical distribution limitation excluding
paul@0 233
those countries, so that distribution is permitted only in or among
paul@0 234
countries not thus excluded.  In such case, this License incorporates
paul@0 235
the limitation as if written in the body of this License.
paul@0 236
paul@0 237
  9. The Free Software Foundation may publish revised and/or new versions
paul@0 238
of the General Public License from time to time.  Such new versions will
paul@0 239
be similar in spirit to the present version, but may differ in detail to
paul@0 240
address new problems or concerns.
paul@0 241
paul@0 242
Each version is given a distinguishing version number.  If the Program
paul@0 243
specifies a version number of this License which applies to it and "any
paul@0 244
later version", you have the option of following the terms and conditions
paul@0 245
either of that version or of any later version published by the Free
paul@0 246
Software Foundation.  If the Program does not specify a version number of
paul@0 247
this License, you may choose any version ever published by the Free Software
paul@0 248
Foundation.
paul@0 249
paul@0 250
  10. If you wish to incorporate parts of the Program into other free
paul@0 251
programs whose distribution conditions are different, write to the author
paul@0 252
to ask for permission.  For software which is copyrighted by the Free
paul@0 253
Software Foundation, write to the Free Software Foundation; we sometimes
paul@0 254
make exceptions for this.  Our decision will be guided by the two goals
paul@0 255
of preserving the free status of all derivatives of our free software and
paul@0 256
of promoting the sharing and reuse of software generally.
paul@0 257
paul@0 258
			    NO WARRANTY
paul@0 259
paul@0 260
  11. BECAUSE THE PROGRAM IS LICENSED FREE OF CHARGE, THERE IS NO WARRANTY
paul@0 261
FOR THE PROGRAM, TO THE EXTENT PERMITTED BY APPLICABLE LAW.  EXCEPT WHEN
paul@0 262
OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR OTHER PARTIES
paul@0 263
PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED
paul@0 264
OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
paul@0 265
MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.  THE ENTIRE RISK AS
paul@0 266
TO THE QUALITY AND PERFORMANCE OF THE PROGRAM IS WITH YOU.  SHOULD THE
paul@0 267
PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF ALL NECESSARY SERVICING,
paul@0 268
REPAIR OR CORRECTION.
paul@0 269
paul@0 270
  12. IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
paul@0 271
WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MAY MODIFY AND/OR
paul@0 272
REDISTRIBUTE THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES,
paul@0 273
INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING
paul@0 274
OUT OF THE USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED
paul@0 275
TO LOSS OF DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY
paul@0 276
YOU OR THIRD PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER
paul@0 277
PROGRAMS), EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE
paul@0 278
POSSIBILITY OF SUCH DAMAGES.
paul@0 279
paul@0 280
		     END OF TERMS AND CONDITIONS
paul@0 281
paul@0 282
	    How to Apply These Terms to Your New Programs
paul@0 283
paul@0 284
  If you develop a new program, and you want it to be of the greatest
paul@0 285
possible use to the public, the best way to achieve this is to make it
paul@0 286
free software which everyone can redistribute and change under these terms.
paul@0 287
paul@0 288
  To do so, attach the following notices to the program.  It is safest
paul@0 289
to attach them to the start of each source file to most effectively
paul@0 290
convey the exclusion of warranty; and each file should have at least
paul@0 291
the "copyright" line and a pointer to where the full notice is found.
paul@0 292
paul@0 293
    <one line to give the program's name and a brief idea of what it does.>
paul@0 294
    Copyright (C) <year>  <name of author>
paul@0 295
paul@0 296
    This program is free software; you can redistribute it and/or modify
paul@0 297
    it under the terms of the GNU General Public License as published by
paul@0 298
    the Free Software Foundation; either version 2 of the License, or
paul@0 299
    (at your option) any later version.
paul@0 300
paul@0 301
    This program is distributed in the hope that it will be useful,
paul@0 302
    but WITHOUT ANY WARRANTY; without even the implied warranty of
paul@0 303
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
paul@0 304
    GNU General Public License for more details.
paul@0 305
paul@0 306
    You should have received a copy of the GNU General Public License along
paul@0 307
    with this program; if not, write to the Free Software Foundation, Inc.,
paul@0 308
    51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
paul@0 309
paul@0 310
Also add information on how to contact you by electronic and paper mail.
paul@0 311
paul@0 312
If the program is interactive, make it output a short notice like this
paul@0 313
when it starts in an interactive mode:
paul@0 314
paul@0 315
    Gnomovision version 69, Copyright (C) year name of author
paul@0 316
    Gnomovision comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
paul@0 317
    This is free software, and you are welcome to redistribute it
paul@0 318
    under certain conditions; type `show c' for details.
paul@0 319
paul@0 320
The hypothetical commands `show w' and `show c' should show the appropriate
paul@0 321
parts of the General Public License.  Of course, the commands you use may
paul@0 322
be called something other than `show w' and `show c'; they could even be
paul@0 323
mouse-clicks or menu items--whatever suits your program.
paul@0 324
paul@0 325
You should also get your employer (if you work as a programmer) or your
paul@0 326
school, if any, to sign a "copyright disclaimer" for the program, if
paul@0 327
necessary.  Here is a sample; alter the names:
paul@0 328
paul@0 329
  Yoyodyne, Inc., hereby disclaims all copyright interest in the program
paul@0 330
  `Gnomovision' (which makes passes at compilers) written by James Hacker.
paul@0 331
paul@0 332
  <signature of Ty Coon>, 1 April 1989
paul@0 333
  Ty Coon, President of Vice
paul@0 334
paul@0 335
This General Public License does not permit incorporating your program into
paul@0 336
proprietary programs.  If your program is a subroutine library, you may
paul@0 337
consider it more useful to permit linking proprietary applications with the
paul@0 338
library.  If this is what you want to do, use the GNU Lesser General
paul@0 339
Public License instead of this License.