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   7
   8 <H2 ALIGN="CENTER">Common UNIX Printing System License Agreement</H2>
   9
  10 <P ALIGN="CENTER">Copyright 1997-2006 by Easy Software Products<BR>
  11 44141 AIRPORT VIEW DR STE 204<BR>
  12 HOLLYWOOD, MARYLAND 20636 USA<BR>
  13 <BR>
  14 Voice: +1.301.373.9600<BR>
  15 Email: <A HREF="mailto:cups-info@cups.org">cups-info@cups.org</A><BR>
  16 WWW: <A HREF="http://www.cups.org">http://www.cups.org</A>
  17
  18 <H3>Introduction</H3>
  19
  20 <P>The Common UNIX Printing System<SUP>TM</SUP>,
  21 ("CUPS<SUP>TM</SUP>"), is provided under the GNU General Public
  22 License ("GPL") and GNU Library General Public License ("LGPL"),
  23 Version 2, with exceptions for Apple operating systems and the
  24 OpenSSL toolkit. A copy of the exceptions and licenses follow
  25 this introduction.
  26
  27 <P>The GNU LGPL applies to the CUPS API library, located in the
  28 "cups" subdirectory of the CUPS source distribution and in the
  29 "cups" include directory and library files in the binary
  30 distributions. The GNU GPL applies to the remainder of the CUPS
  31 distribution, including the "pdftops" filter which is based upon
  32 Xpdf and the CUPS imaging library.
  33
  34 <P>For those not familiar with the GNU GPL, the license basically
  35 allows you to:
  36
  37 <UL>
  38
  39         <LI>Use the CUPS software at no charge.</LI>
  40
  41         <LI>Distribute verbatim copies of the software in source
  42         or binary form.</LI>
  43
  44         <LI>Sell verbatim copies of the software for a media
  45         fee, or sell support for the software.</LI>
  46
  47         <LI>Distribute or sell printer drivers and filters that
  48         use CUPS so long as source code is made available under
  49         the GPL.</LI>
  50
  51 </UL>
  52
  53 <P>What this license <B>does not</B> allow you to do is make
  54 changes or add features to CUPS and then sell a binary
  55 distribution without source code. You must provide source for
  56 any new drivers, changes, or additions to the software, and all
  57 code must be provided under the GPL or LGPL as appropriate. The
  58 only exceptions to this are the portions of the CUPS software
  59 covered by the Apple operating system license exceptions
  60 outlined later in this license agreement.
  61
  62 <P>The GNU LGPL relaxes the "link-to" restriction, allowing you
  63 to develop applications that use the CUPS API library under
  64 other licenses and/or conditions as appropriate for your
  65 application.
  66
  67 <H3>License Exceptions</H3>
  68
  69 <P>In addition, as the copyright holder of CUPS, Easy Software
  70 Products grants the following special exceptions:
  71
  72 <OL>
  73
  74         <LI><B>Apple Operating System Development License
  75         Exception</B>;
  76
  77         <OL TYPE="a">
  78
  79                 <LI>Software that is developed by any person or
  80                 entity for an Apple Operating System ("Apple
  81                 OS-Developed Software"), including but not
  82                 limited to Apple and third party printer
  83                 drivers, filters, and backends for an Apple
  84                 Operating System, that is linked to the CUPS
  85                 imaging library or based on any sample filters
  86                 or backends provided with CUPS shall not be
  87                 considered to be a derivative work or collective
  88                 work based on the CUPS program and is exempt
  89                 from the mandatory source code release clauses
  90                 of the GNU GPL. You may therefore distribute
  91                 linked combinations of the CUPS imaging library
  92                 with Apple OS-Developed Software without
  93                 releasing the source code of the Apple
  94                 OS-Developed Software. You may also use sample
  95                 filters and backends provided with CUPS to
  96                 develop Apple OS-Developed Software without
  97                 releasing the source code of the Apple
  98                 OS-Developed Software.</LI>
  99
 100                 <LI>An Apple Operating System means any
 101                 operating system software developed and/or
 102                 marketed by Apple Computer, Inc., including but
 103                 not limited to all existing releases and
 104                 versions of Apple's Darwin, Mac OS X, and Mac OS
 105                 X Server products and all follow-on releases and
 106                 future versions thereof.</LI>
 107
 108                 <LI>This exception is only available for Apple
 109                 OS-Developed Software and does not apply to
 110                 software that is distributed for use on other
 111                 operating systems.</LI>
 112
 113                 <LI>All CUPS software that falls under this
 114                 license exception have the following text at the
 115                 top of each source file:
 116
 117                 <BLOCKQUOTE>This file is subject to the Apple
 118                 OS-Developed Software
 119                 exception.</BLOCKQUOTE></LI>
 120
 121         </OL>
 122
 123         <LI><B>OpenSSL Toolkit License Exception</B>;
 124
 125         <OL TYPE="a">
 126
 127                 <LI>Easy Software Products explicitly allows the
 128                 compilation and distribution of the CUPS
 129                 software with the OpenSSL Toolkit.</LI>
 130
 131         </OL>
 132
 133 </OL>
 134
 135 <P>No developer is required to provide these exceptions in a
 136 derived work.
 137
 138 <H3>Trademarks</H3>
 139
 140 <P>Easy Software Products has trademarked the Common UNIX
 141 Printing System, CUPS, and CUPS logo. You may use these names
 142 and logos in any direct port or binary distribution of CUPS.
 143 Please contact Easy Software Products for written permission to
 144 use them in derivative products. Our intention is to protect the
 145 value of these trademarks and ensure that any derivative product
 146 meets the same high-quality standards as the original.
 147
 148 <H3>Binary Distribution Rights</H3>
 149
 150 <P>Easy Software Products also sells rights to the CUPS source
 151 code under a binary distribution license for vendors that are
 152 unable to release source code for their drivers, additions, and
 153 modifications to CUPS under the GNU GPL and LGPL. For
 154 information please contact us at the address shown above.
 155
 156 <P>The Common UNIX Printing System provides a "pdftops" filter
 157 that is based on the Xpdf software. For binary distribution
 158 licensing of this software, please contact:
 159
 160 <BLOCKQUOTE>
 161 Derek B. Noonburg<BR>
 162 Email: <A HREF="mailto:derekn@foolabs.com">derekn@foolabs.com</A><BR>
 163 WWW: <A HREF="http://www.foolabs.com/xpdf/">http://www.foolabs.com/xpdf/</A>
 164 </BLOCKQUOTE>
 165
 166 <H3>Support</H3>
 167
 168 <P>Easy Software Products sells software support for CUPS as
 169 well as a commercial printing product based on CUPS called ESP
 170 Print Pro. You can find out more at our web site:
 171
 172 <UL><PRE>
 173 <A HREF="http://www.easysw.com/">http://www.easysw.com/</A>
 174 </PRE></UL>
 175
 176 <!-- NEW PAGE -->
 177 <H2>GNU GENERAL PUBLIC LICENSE</H2>
 178
 179 <P>Version 2, June 1991
 180
 181 <PRE>
 182 Copyright 1989, 1991 Free Software Foundation, Inc.
 183 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
 184
 185 Everyone is permitted to copy and distribute verbatim
 186 copies of this license document, but changing it is not allowed.
 187 </PRE>
 188
 189 <H4>Preamble</H4>
 190
 191 <P>The licenses for most software are designed to take away your
 192 freedom to share and change it.  By contrast, the GNU General Public
 193 License is intended to guarantee your freedom to share and change free
 194 software--to make sure the software is free for all its users.  This
 195 General Public License applies to most of the Free Software
 196 Foundation's software and to any other program whose authors commit to
 197 using it.  (Some other Free Software Foundation software is covered by
 198 the GNU Library General Public License instead.)  You can apply it to
 199 your programs, too.
 200
 201 <P>When we speak of free software, we are referring to freedom, not
 202 price.  Our General Public Licenses are designed to make sure that you
 203 have the freedom to distribute copies of free software (and charge for
 204 this service if you wish), that you receive source code or can get it
 205 if you want it, that you can change the software or use pieces of it
 206 in new free programs; and that you know you can do these things.
 207
 208 <P>To protect your rights, we need to make restrictions that forbid
 209 anyone to deny you these rights or to ask you to surrender the rights.
 210 These restrictions translate to certain responsibilities for you if you
 211 distribute copies of the software, or if you modify it.
 212
 213 <P>For example, if you distribute copies of such a program, whether
 214 gratis or for a fee, you must give the recipients all the rights that
 215 you have.  You must make sure that they, too, receive or can get the
 216 source code.  And you must show them these terms so they know their
 217 rights.
 218
 219 <P>We protect your rights with two steps: (1) copyright the software, and
 220 (2) offer you this license which gives you legal permission to copy,
 221 distribute and/or modify the software.
 222
 223 <P>Also, for each author's protection and ours, we want to make certain
 224 that everyone understands that there is no warranty for this free
 225 software.  If the software is modified by someone else and passed on, we
 226 want its recipients to know that what they have is not the original, so
 227 that any problems introduced by others will not reflect on the original
 228 authors' reputations.
 229
 230 <P>Finally, any free program is threatened constantly by software
 231 patents.  We wish to avoid the danger that redistributors of a free
 232 program will individually obtain patent licenses, in effect making the
 233 program proprietary.  To prevent this, we have made it clear that any
 234 patent must be licensed for everyone's free use or not licensed at all.
 235
 236 <P>The precise terms and conditions for copying, distribution and
 237 modification follow.
 238
 239 <H4>GNU GENERAL PUBLIC LICENSE<BR>
 240 TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION</H4>
 241
 242 <OL START="0">
 243
 244 <LI>This License applies to any program or other work which contains
 245 a notice placed by the copyright holder saying it may be distributed
 246 under the terms of this General Public License.  The "Program", below,
 247 refers to any such program or work, and a "work based on the Program"
 248 means either the Program or any derivative work under copyright law:
 249 that is to say, a work containing the Program or a portion of it,
 250 either verbatim or with modifications and/or translated into another
 251 language.  (Hereinafter, translation is included without limitation in
 252 the term "modification".)  Each licensee is addressed as "you".
 253
 254 <P>Activities other than copying, distribution and modification are not
 255 covered by this License; they are outside its scope.  The act of
 256 running the Program is not restricted, and the output from the Program
 257 is covered only if its contents constitute a work based on the
 258 Program (independent of having been made by running the Program).
 259 Whether that is true depends on what the Program does.
 260
 261 <LI>You may copy and distribute verbatim copies of the Program's
 262 source code as you receive it, in any medium, provided that you
 263 conspicuously and appropriately publish on each copy an appropriate
 264 copyright notice and disclaimer of warranty; keep intact all the
 265 notices that refer to this License and to the absence of any warranty;
 266 and give any other recipients of the Program a copy of this License
 267 along with the Program.
 268
 269 <P>You may charge a fee for the physical act of transferring a copy, and
 270 you may at your option offer warranty protection in exchange for a fee.
 271
 272 <LI>You may modify your copy or copies of the Program or any portion
 273 of it, thus forming a work based on the Program, and copy and
 274 distribute such modifications or work under the terms of Section 1
 275 above, provided that you also meet all of these conditions:
 276
 277 <OL TYPE="a">
 278
 279 <LI>You must cause the modified files to carry prominent notices
 280 stating that you changed the files and the date of any change.
 281
 282 <LI>You must cause any work that you distribute or publish, that in
 283 whole or in part contains or is derived from the Program or any
 284 part thereof, to be licensed as a whole at no charge to all third
 285 parties under the terms of this License.
 286
 287 <LI>if the modified program normally reads commands interactively
 288 when run, you must cause it, when started running for such
 289 interactive use in the most ordinary way, to print or display an
 290 announcement including an appropriate copyright notice and a
 291 notice that there is no warranty (or else, saying that you provide
 292 a warranty) and that users may redistribute the program under
 293 these conditions, and telling the user how to view a copy of this
 294 License.  (Exception: if the Program itself is interactive but
 295 does not normally print such an announcement, your work based on
 296 the Program is not required to print an announcement.)
 297
 298 </OL>
 299
 300 <P>These requirements apply to the modified work as a whole.  If
 301 identifiable sections of that work are not derived from the Program,
 302 and can be reasonably considered independent and separate works in
 303 themselves, then this License, and its terms, do not apply to those
 304 sections when you distribute them as separate works.  But when you
 305 distribute the same sections as part of a whole which is a work based
 306 on the Program, the distribution of the whole must be on the terms of
 307 this License, whose permissions for other licensees extend to the
 308 entire whole, and thus to each and every part regardless of who wrote it.
 309
 310 <P>Thus, it is not the intent of this section to claim rights or contest
 311 your rights to work written entirely by you; rather, the intent is to
 312 exercise the right to control the distribution of derivative or
 313 collective works based on the Program.
 314
 315 <P>In addition, mere aggregation of another work not based on the Program
 316 with the Program (or with a work based on the Program) on a volume of
 317 a storage or distribution medium does not bring the other work under
 318 the scope of this License.
 319
 320 <LI>You may copy and distribute the Program (or a work based on it,
 321 under Section 2) in object code or executable form under the terms of
 322 Sections 1 and 2 above provided that you also do one of the following:
 323
 324 <OL TYPE="a">
 325
 326 <LI>Accompany it with the complete corresponding machine-readable
 327 source code, which must be distributed under the terms of Sections
 328 1 and 2 above on a medium customarily used for software interchange; or,
 329
 330 <LI>Accompany it with a written offer, valid for at least three
 331 years, to give any third party, for a charge no more than your
 332 cost of physically performing source distribution, a complete
 333 machine-readable copy of the corresponding source code, to be
 334 distributed under the terms of Sections 1 and 2 above on a medium
 335 customarily used for software interchange; or,
 336
 337 <LI>Accompany it with the information you received as to the offer
 338 to distribute corresponding source code.  (This alternative is
 339 allowed only for noncommercial distribution and only if you
 340 received the program in object code or executable form with such
 341 an offer, in accord with Subsection b above.)
 342
 343 </OL>
 344
 345 <P>The source code for a work means the preferred form of the work for
 346 making modifications to it.  For an executable work, complete source
 347 code means all the source code for all modules it contains, plus any
 348 associated interface definition files, plus the scripts used to
 349 control compilation and installation of the executable.  However, as a
 350 special exception, the source code distributed need not include
 351 anything that is normally distributed (in either source or binary
 352 form) with the major components (compiler, kernel, and so on) of the
 353 operating system on which the executable runs, unless that component
 354 itself accompanies the executable.
 355
 356 <P>If distribution of executable or object code is made by offering
 357 access to copy from a designated place, then offering equivalent
 358 access to copy the source code from the same place counts as
 359 distribution of the source code, even though third parties are not
 360 compelled to copy the source along with the object code.
 361
 362 <LI>You may not copy, modify, sublicense, or distribute the Program
 363 except as expressly provided under this License.  Any attempt
 364 otherwise to copy, modify, sublicense or distribute the Program is
 365 void, and will automatically terminate your rights under this License.
 366 However, parties who have received copies, or rights, from you under
 367 this License will not have their licenses terminated so long as such
 368 parties remain in full compliance.
 369
 370 <LI>You are not required to accept this License, since you have not
 371 signed it.  However, nothing else grants you permission to modify or
 372 distribute the Program or its derivative works.  These actions are
 373 prohibited by law if you do not accept this License.  Therefore, by
 374 modifying or distributing the Program (or any work based on the
 375 Program), you indicate your acceptance of this License to do so, and
 376 all its terms and conditions for copying, distributing or modifying
 377 the Program or works based on it.
 378
 379 <LI>Each time you redistribute the Program (or any work based on the
 380 Program), the recipient automatically receives a license from the
 381 original licensor to copy, distribute or modify the Program subject to
 382 these terms and conditions.  You may not impose any further
 383 restrictions on the recipients' exercise of the rights granted herein.
 384 You are not responsible for enforcing compliance by third parties to
 385 this License.
 386
 387 <LI>If, as a consequence of a court judgment or allegation of patent
 388 infringement or for any other reason (not limited to patent issues),
 389 conditions are imposed on you (whether by court order, agreement or
 390 otherwise) that contradict the conditions of this License, they do not
 391 excuse you from the conditions of this License.  If you cannot
 392 distribute so as to satisfy simultaneously your obligations under this
 393 License and any other pertinent obligations, then as a consequence you
 394 may not distribute the Program at all.  For example, if a patent
 395 license would not permit royalty-free redistribution of the Program by
 396 all those who receive copies directly or indirectly through you, then
 397 the only way you could satisfy both it and this License would be to
 398 refrain entirely from distribution of the Program.
 399
 400 <P>If any portion of this section is held invalid or unenforceable under
 401 any particular circumstance, the balance of the section is intended to
 402 apply and the section as a whole is intended to apply in other
 403 circumstances.
 404
 405 <P>It is not the purpose of this section to induce you to infringe any
 406 patents or other property right claims or to contest validity of any
 407 such claims; this section has the sole purpose of protecting the
 408 integrity of the free software distribution system, which is
 409 implemented by public license practices.  Many people have made
 410 generous contributions to the wide range of software distributed
 411 through that system in reliance on consistent application of that
 412 system; it is up to the author/donor to decide if he or she is willing
 413 to distribute software through any other system and a licensee cannot
 414 impose that choice.
 415
 416 <P>This section is intended to make thoroughly clear what is believed to
 417 be a consequence of the rest of this License.
 418
 419 <LI>If the distribution and/or use of the Program is restricted in
 420 certain countries either by patents or by copyrighted interfaces, the
 421 original copyright holder who places the Program under this License
 422 may add an explicit geographical distribution limitation excluding
 423 those countries, so that distribution is permitted only in or among
 424 countries not thus excluded.  In such case, this License incorporates
 425 the limitation as if written in the body of this License.
 426
 427 <LI>The Free Software Foundation may publish revised and/or new versions
 428 of the General Public License from time to time.  Such new versions will
 429 be similar in spirit to the present version, but may differ in detail to
 430 address new problems or concerns.
 431
 432 <P>Each version is given a distinguishing version number.  If the Program
 433 specifies a version number of this License which applies to it and "any
 434 later version", you have the option of following the terms and conditions
 435 either of that version or of any later version published by the Free
 436 Software Foundation.  If the Program does not specify a version number of
 437 this License, you may choose any version ever published by the Free Software
 438 Foundation.
 439
 440 <LI>If you wish to incorporate parts of the Program into other free
 441 programs whose distribution conditions are different, write to the author
 442 to ask for permission.  For software which is copyrighted by the Free
 443 Software Foundation, write to the Free Software Foundation; we sometimes
 444 make exceptions for this.  Our decision will be guided by the two goals
 445 of preserving the free status of all derivatives of our free software and
 446 of promoting the sharing and reuse of software generally.
 447
 448 </OL>
 449
 450 <H4>NO WARRANTY</H4>
 451
 452 <OL START="11">
 453
 454 <LI>BECAUSE THE PROGRAM IS LICENSED FREE OF CHARGE, THERE IS NO WARRANTY
 455 FOR THE PROGRAM, TO THE EXTENT PERMITTED BY APPLICABLE LAW.  EXCEPT WHEN
 456 OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR OTHER PARTIES
 457 PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED
 458 OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
 459 MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.  THE ENTIRE RISK AS
 460 TO THE QUALITY AND PERFORMANCE OF THE PROGRAM IS WITH YOU.  SHOULD THE
 461 PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF ALL NECESSARY SERVICING,
 462 REPAIR OR CORRECTION.
 463
 464 <LI>IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
 465 WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MAY MODIFY AND/OR
 466 REDISTRIBUTE THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES,
 467 INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING
 468 OUT OF THE USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED
 469 TO LOSS OF DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY
 470 YOU OR THIRD PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER
 471 PROGRAMS), EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE
 472 POSSIBILITY OF SUCH DAMAGES.
 473
 474 </OL>
 475
 476 <H4>END OF TERMS AND CONDITIONS</H4>
 477
 478 <H4>How to Apply These Terms to Your New Programs</H4>
 479
 480 <P>If you develop a new program, and you want it to be of the greatest
 481 possible use to the public, the best way to achieve this is to make it
 482 free software which everyone can redistribute and change under these terms.
 483
 484 <P>To do so, attach the following notices to the program.  It is safest
 485 to attach them to the start of each source file to most effectively
 486 convey the exclusion of warranty; and each file should have at least
 487 the "copyright" line and a pointer to where the full notice is found.
 488
 489 <PRE>
 490 <VAR>one line to give the program's name and an idea of what it does.</VAR>
 491 Copyright (C) <VAR>yyyy</VAR>  <VAR>name of author</VAR>
 492
 493 This program is free software; you can redistribute it and/or
 494 modify it under the terms of the GNU General Public License
 495 as published by the Free Software Foundation; either version 2
 496 of the License, or (at your option) any later version.
 497
 498 This program is distributed in the hope that it will be useful,
 499 but WITHOUT ANY WARRANTY; without even the implied warranty of
 500 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 501 GNU General Public License for more details.
 502
 503 You should have received a copy of the GNU General Public License
 504 along with this program; if not, write to the Free Software
 505 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
 506 </PRE>
 507
 508 <P>Also add information on how to contact you by electronic and paper mail.
 509
 510 <P>If the program is interactive, make it output a short notice like this
 511 when it starts in an interactive mode:
 512
 513 <PRE>
 514 Gnomovision version 69, Copyright (C) <VAR>year</VAR> <VAR>name of author</VAR>
 515 Gnomovision comes with ABSOLUTELY NO WARRANTY; for details
 516 type `show w'.  This is free software, and you are welcome
 517 to redistribute it under certain conditions; type `show c'
 518 for details.
 519 </PRE>
 520
 521 <P>The hypothetical commands <SAMP>`show w'</SAMP> and <SAMP>`show c'</SAMP> should show
 522 the appropriate parts of the General Public License.  Of course, the
 523 commands you use may be called something other than <SAMP>`show w'</SAMP> and
 524 <SAMP>`show c'</SAMP>; they could even be mouse-clicks or menu items--whatever
 525 suits your program.
 526
 527 <P>You should also get your employer (if you work as a programmer) or your
 528 school, if any, to sign a "copyright disclaimer" for the program, if
 529 necessary.  Here is a sample; alter the names:
 530
 531 <PRE>
 532 Yoyodyne, Inc., hereby disclaims all copyright
 533 interest in the program `Gnomovision'
 534 (which makes passes at compilers) written
 535 by James Hacker.
 536
 537 <VAR>signature of Ty Coon</VAR>, 1 April 1989
 538 Ty Coon, President of Vice
 539 </PRE>
 540
 541 <!-- NEW PAGE -->
 542 <H2>GNU LIBRARY GENERAL PUBLIC LICENSE</H2>
 543
 544 <P>Version 2, June 1991
 545
 546 <PRE>
 547 Copyright (C) 1991 Free Software Foundation, Inc.
 548 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA
 549 Everyone is permitted to copy and distribute verbatim copies
 550 of this license document, but changing it is not allowed.
 551
 552 [This is the first released version of the library GPL.  It is
 553  numbered 2 because it goes with version 2 of the ordinary GPL.]
 554 </PRE>
 555
 556 <H4>Preamble</H4>
 557
 558 <P>The licenses for most software are designed to take away your
 559 freedom to share and change it.  By contrast, the GNU General Public
 560 Licenses are intended to guarantee your freedom to share and change
 561 free software--to make sure the software is free for all its users.
 562
 563 <P>This license, the Library General Public License, applies to some
 564 specially designated Free Software Foundation software, and to any
 565 other libraries whose authors decide to use it.  You can use it for
 566 your libraries, too.
 567
 568 <P>When we speak of free software, we are referring to freedom, not
 569 price.  Our General Public Licenses are designed to make sure that you
 570 have the freedom to distribute copies of free software (and charge for
 571 this service if you wish), that you receive source code or can get it
 572 if you want it, that you can change the software or use pieces of it
 573 in new free programs; and that you know you can do these things.
 574
 575 <P>To protect your rights, we need to make restrictions that forbid
 576 anyone to deny you these rights or to ask you to surrender the rights.
 577 These restrictions translate to certain responsibilities for you if
 578 you distribute copies of the library, or if you modify it.
 579
 580 <P>For example, if you distribute copies of the library, whether gratis
 581 or for a fee, you must give the recipients all the rights that we gave
 582 you.  You must make sure that they, too, receive or can get the source
 583 code.  If you link a program with the library, you must provide
 584 complete object files to the recipients so that they can relink them
 585 with the library, after making changes to the library and recompiling
 586 it.  And you must show them these terms so they know their rights.
 587
 588 <P>Our method of protecting your rights has two steps: (1) copyright
 589 the library, and (2) offer you this license which gives you legal
 590 permission to copy, distribute and/or modify the library.
 591
 592 <P>Also, for each distributor's protection, we want to make certain
 593 that everyone understands that there is no warranty for this free
 594 library.  If the library is modified by someone else and passed on, we
 595 want its recipients to know that what they have is not the original
 596 version, so that any problems introduced by others will not reflect on
 597 the original authors' reputations.
 598
 599 <P>Finally, any free program is threatened constantly by software
 600 patents.  We wish to avoid the danger that companies distributing free
 601 software will individually obtain patent licenses, thus in effect
 602 transforming the program into proprietary software.  To prevent this,
 603 we have made it clear that any patent must be licensed for everyone's
 604 free use or not licensed at all.
 605
 606 <P>Most GNU software, including some libraries, is covered by the ordinary
 607 GNU General Public License, which was designed for utility programs.  This
 608 license, the GNU Library General Public License, applies to certain
 609 designated libraries.  This license is quite different from the ordinary
 610 one; be sure to read it in full, and don't assume that anything in it is
 611 the same as in the ordinary license.
 612
 613 <P>The reason we have a separate public license for some libraries is that
 614 they blur the distinction we usually make between modifying or adding to a
 615 program and simply using it.  Linking a program with a library, without
 616 changing the library, is in some sense simply using the library, and is
 617 analogous to running a utility program or application program.  However, in
 618 a textual and legal sense, the linked executable is a combined work, a
 619 derivative of the original library, and the ordinary General Public License
 620 treats it as such.
 621
 622 <P>Because of this blurred distinction, using the ordinary General
 623 Public License for libraries did not effectively promote software
 624 sharing, because most developers did not use the libraries.  We
 625 concluded that weaker conditions might promote sharing better.
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1056 <PRE>
1057 Yoyodyne, Inc., hereby disclaims all copyright interest in
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1060
1061 <VAR>signature of Ty Coon</VAR>, 1 April 1990
1062 Ty Coon, President of Vice
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