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    1: <p>LON-CAPA is licensed under the Gnu Public License. The Gnu Public
    2: License follows:</p>
    3: 
    4: <pre>
    5: 		    GNU GENERAL PUBLIC LICENSE
    6: 		       Version 2, June 1991
    7: 
    8:  Copyright (C) 1989, 1991 Free Software Foundation, Inc.
    9:                        59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
   10:  Everyone is permitted to copy and distribute verbatim copies
   11:  of this license document, but changing it is not allowed.
   12: 
   13: 			    Preamble
   14: 
   15:   The licenses for most software are designed to take away your
   16: freedom to share and change it.  By contrast, the GNU General Public
   17: License is intended to guarantee your freedom to share and change free
   18: software--to make sure the software is free for all its users.  This
   19: General Public License applies to most of the Free Software
   20: Foundation's software and to any other program whose authors commit to
   21: using it.  (Some other Free Software Foundation software is covered by
   22: the GNU Library General Public License instead.)  You can apply it to
   23: your programs, too.
   24: 
   25:   When we speak of free software, we are referring to freedom, not
   26: price.  Our General Public Licenses are designed to make sure that you
   27: have the freedom to distribute copies of free software (and charge for
   28: this service if you wish), that you receive source code or can get it
   29: if you want it, that you can change the software or use pieces of it
   30: in new free programs; and that you know you can do these things.
   31: 
   32:   To protect your rights, we need to make restrictions that forbid
   33: anyone to deny you these rights or to ask you to surrender the rights.
   34: These restrictions translate to certain responsibilities for you if you
   35: distribute copies of the software, or if you modify it.
   36: 
   37:   For example, if you distribute copies of such a program, whether
   38: gratis or for a fee, you must give the recipients all the rights that
   39: you have.  You must make sure that they, too, receive or can get the
   40: source code.  And you must show them these terms so they know their
   41: rights.
   42: 
   43:   We protect your rights with two steps: (1) copyright the software, and
   44: (2) offer you this license which gives you legal permission to copy,
   45: distribute and/or modify the software.
   46: 
   47:   Also, for each author's protection and ours, we want to make certain
   48: that everyone understands that there is no warranty for this free
   49: software.  If the software is modified by someone else and passed on, we
   50: want its recipients to know that what they have is not the original, so
   51: that any problems introduced by others will not reflect on the original
   52: authors' reputations.
   53: 
   54:   Finally, any free program is threatened constantly by software
   55: patents.  We wish to avoid the danger that redistributors of a free
   56: program will individually obtain patent licenses, in effect making the
   57: program proprietary.  To prevent this, we have made it clear that any
   58: patent must be licensed for everyone's free use or not licensed at all.
   59: 
   60:   The precise terms and conditions for copying, distribution and
   61: modification follow.
   62: 
   63: 		    GNU GENERAL PUBLIC LICENSE
   64:    TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION
   65: 
   66:   0. This License applies to any program or other work which contains
   67: a notice placed by the copyright holder saying it may be distributed
   68: under the terms of this General Public License.  The "Program", below,
   69: refers to any such program or work, and a "work based on the Program"
   70: means either the Program or any derivative work under copyright law:
   71: that is to say, a work containing the Program or a portion of it,
   72: either verbatim or with modifications and/or translated into another
   73: language.  (Hereinafter, translation is included without limitation in
   74: the term "modification".)  Each licensee is addressed as "you".
   75: 
   76: Activities other than copying, distribution and modification are not
   77: covered by this License; they are outside its scope.  The act of
   78: running the Program is not restricted, and the output from the Program
   79: is covered only if its contents constitute a work based on the
   80: Program (independent of having been made by running the Program).
   81: Whether that is true depends on what the Program does.
   82: 
   83:   1. You may copy and distribute verbatim copies of the Program's
   84: source code as you receive it, in any medium, provided that you
   85: conspicuously and appropriately publish on each copy an appropriate
   86: copyright notice and disclaimer of warranty; keep intact all the
   87: notices that refer to this License and to the absence of any warranty;
   88: and give any other recipients of the Program a copy of this License
   89: along with the Program.
   90: 
   91: You may charge a fee for the physical act of transferring a copy, and
   92: you may at your option offer warranty protection in exchange for a fee.
   93: 
   94:   2. You may modify your copy or copies of the Program or any portion
   95: of it, thus forming a work based on the Program, and copy and
   96: distribute such modifications or work under the terms of Section 1
   97: above, provided that you also meet all of these conditions:
   98: 
   99:     a) You must cause the modified files to carry prominent notices
  100:     stating that you changed the files and the date of any change.
  101: 
  102:     b) You must cause any work that you distribute or publish, that in
  103:     whole or in part contains or is derived from the Program or any
  104:     part thereof, to be licensed as a whole at no charge to all third
  105:     parties under the terms of this License.
  106: 
  107:     c) If the modified program normally reads commands interactively
  108:     when run, you must cause it, when started running for such
  109:     interactive use in the most ordinary way, to print or display an
  110:     announcement including an appropriate copyright notice and a
  111:     notice that there is no warranty (or else, saying that you provide
  112:     a warranty) and that users may redistribute the program under
  113:     these conditions, and telling the user how to view a copy of this
  114:     License.  (Exception: if the Program itself is interactive but
  115:     does not normally print such an announcement, your work based on
  116:     the Program is not required to print an announcement.)
  117: 
  118: These requirements apply to the modified work as a whole.  If
  119: identifiable sections of that work are not derived from the Program,
  120: and can be reasonably considered independent and separate works in
  121: themselves, then this License, and its terms, do not apply to those
  122: sections when you distribute them as separate works.  But when you
  123: distribute the same sections as part of a whole which is a work based
  124: on the Program, the distribution of the whole must be on the terms of
  125: this License, whose permissions for other licensees extend to the
  126: entire whole, and thus to each and every part regardless of who wrote it.
  127: 
  128: Thus, it is not the intent of this section to claim rights or contest
  129: your rights to work written entirely by you; rather, the intent is to
  130: exercise the right to control the distribution of derivative or
  131: collective works based on the Program.
  132: 
  133: In addition, mere aggregation of another work not based on the Program
  134: with the Program (or with a work based on the Program) on a volume of
  135: a storage or distribution medium does not bring the other work under
  136: the scope of this License.
  137: 
  138:   3. You may copy and distribute the Program (or a work based on it,
  139: under Section 2) in object code or executable form under the terms of
  140: Sections 1 and 2 above provided that you also do one of the following:
  141: 
  142:     a) Accompany it with the complete corresponding machine-readable
  143:     source code, which must be distributed under the terms of Sections
  144:     1 and 2 above on a medium customarily used for software interchange; or,
  145: 
  146:     b) Accompany it with a written offer, valid for at least three
  147:     years, to give any third party, for a charge no more than your
  148:     cost of physically performing source distribution, a complete
  149:     machine-readable copy of the corresponding source code, to be
  150:     distributed under the terms of Sections 1 and 2 above on a medium
  151:     customarily used for software interchange; or,
  152: 
  153:     c) Accompany it with the information you received as to the offer
  154:     to distribute corresponding source code.  (This alternative is
  155:     allowed only for noncommercial distribution and only if you
  156:     received the program in object code or executable form with such
  157:     an offer, in accord with Subsection b above.)
  158: 
  159: The source code for a work means the preferred form of the work for
  160: making modifications to it.  For an executable work, complete source
  161: code means all the source code for all modules it contains, plus any
  162: associated interface definition files, plus the scripts used to
  163: control compilation and installation of the executable.  However, as a
  164: special exception, the source code distributed need not include
  165: anything that is normally distributed (in either source or binary
  166: form) with the major components (compiler, kernel, and so on) of the
  167: operating system on which the executable runs, unless that component
  168: itself accompanies the executable.
  169: 
  170: If distribution of executable or object code is made by offering
  171: access to copy from a designated place, then offering equivalent
  172: access to copy the source code from the same place counts as
  173: distribution of the source code, even though third parties are not
  174: compelled to copy the source along with the object code.
  175: 
  176:   4. You may not copy, modify, sublicense, or distribute the Program
  177: except as expressly provided under this License.  Any attempt
  178: otherwise to copy, modify, sublicense or distribute the Program is
  179: void, and will automatically terminate your rights under this License.
  180: However, parties who have received copies, or rights, from you under
  181: this License will not have their licenses terminated so long as such
  182: parties remain in full compliance.
  183: 
  184:   5. You are not required to accept this License, since you have not
  185: signed it.  However, nothing else grants you permission to modify or
  186: distribute the Program or its derivative works.  These actions are
  187: prohibited by law if you do not accept this License.  Therefore, by
  188: modifying or distributing the Program (or any work based on the
  189: Program), you indicate your acceptance of this License to do so, and
  190: all its terms and conditions for copying, distributing or modifying
  191: the Program or works based on it.
  192: 
  193:   6. Each time you redistribute the Program (or any work based on the
  194: Program), the recipient automatically receives a license from the
  195: original licensor to copy, distribute or modify the Program subject to
  196: these terms and conditions.  You may not impose any further
  197: restrictions on the recipients' exercise of the rights granted herein.
  198: You are not responsible for enforcing compliance by third parties to
  199: this License.
  200: 
  201:   7. If, as a consequence of a court judgment or allegation of patent
  202: infringement or for any other reason (not limited to patent issues),
  203: conditions are imposed on you (whether by court order, agreement or
  204: otherwise) that contradict the conditions of this License, they do not
  205: excuse you from the conditions of this License.  If you cannot
  206: distribute so as to satisfy simultaneously your obligations under this
  207: License and any other pertinent obligations, then as a consequence you
  208: may not distribute the Program at all.  For example, if a patent
  209: license would not permit royalty-free redistribution of the Program by
  210: all those who receive copies directly or indirectly through you, then
  211: the only way you could satisfy both it and this License would be to
  212: refrain entirely from distribution of the Program.
  213: 
  214: If any portion of this section is held invalid or unenforceable under
  215: any particular circumstance, the balance of the section is intended to
  216: apply and the section as a whole is intended to apply in other
  217: circumstances.
  218: 
  219: It is not the purpose of this section to induce you to infringe any
  220: patents or other property right claims or to contest validity of any
  221: such claims; this section has the sole purpose of protecting the
  222: integrity of the free software distribution system, which is
  223: implemented by public license practices.  Many people have made
  224: generous contributions to the wide range of software distributed
  225: through that system in reliance on consistent application of that
  226: system; it is up to the author/donor to decide if he or she is willing
  227: to distribute software through any other system and a licensee cannot
  228: impose that choice.
  229: 
  230: This section is intended to make thoroughly clear what is believed to
  231: be a consequence of the rest of this License.
  232: 
  233:   8. If the distribution and/or use of the Program is restricted in
  234: certain countries either by patents or by copyrighted interfaces, the
  235: original copyright holder who places the Program under this License
  236: may add an explicit geographical distribution limitation excluding
  237: those countries, so that distribution is permitted only in or among
  238: countries not thus excluded.  In such case, this License incorporates
  239: the limitation as if written in the body of this License.
  240: 
  241:   9. The Free Software Foundation may publish revised and/or new versions
  242: of the General Public License from time to time.  Such new versions will
  243: be similar in spirit to the present version, but may differ in detail to
  244: address new problems or concerns.
  245: 
  246: Each version is given a distinguishing version number.  If the Program
  247: specifies a version number of this License which applies to it and "any
  248: later version", you have the option of following the terms and conditions
  249: either of that version or of any later version published by the Free
  250: Software Foundation.  If the Program does not specify a version number of
  251: this License, you may choose any version ever published by the Free Software
  252: Foundation.
  253: 
  254:   10. If you wish to incorporate parts of the Program into other free
  255: programs whose distribution conditions are different, write to the author
  256: to ask for permission.  For software which is copyrighted by the Free
  257: Software Foundation, write to the Free Software Foundation; we sometimes
  258: make exceptions for this.  Our decision will be guided by the two goals
  259: of preserving the free status of all derivatives of our free software and
  260: of promoting the sharing and reuse of software generally.
  261: 
  262: 			    NO WARRANTY
  263: 
  264:   11. BECAUSE THE PROGRAM IS LICENSED FREE OF CHARGE, THERE IS NO WARRANTY
  265: FOR THE PROGRAM, TO THE EXTENT PERMITTED BY APPLICABLE LAW.  EXCEPT WHEN
  266: OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR OTHER PARTIES
  267: PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED
  268: OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
  269: MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.  THE ENTIRE RISK AS
  270: TO THE QUALITY AND PERFORMANCE OF THE PROGRAM IS WITH YOU.  SHOULD THE
  271: PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF ALL NECESSARY SERVICING,
  272: REPAIR OR CORRECTION.
  273: 
  274:   12. IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
  275: WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MAY MODIFY AND/OR
  276: REDISTRIBUTE THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES,
  277: INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING
  278: OUT OF THE USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED
  279: TO LOSS OF DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY
  280: YOU OR THIRD PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER
  281: PROGRAMS), EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE
  282: POSSIBILITY OF SUCH DAMAGES.
  283: 
  284: 		     END OF TERMS AND CONDITIONS
  285: 
  286: 	    How to Apply These Terms to Your New Programs
  287: 
  288:   If you develop a new program, and you want it to be of the greatest
  289: possible use to the public, the best way to achieve this is to make it
  290: free software which everyone can redistribute and change under these terms.
  291: 
  292:   To do so, attach the following notices to the program.  It is safest
  293: to attach them to the start of each source file to most effectively
  294: convey the exclusion of warranty; and each file should have at least
  295: the "copyright" line and a pointer to where the full notice is found.
  296: 
  297:     &lt;one line to give the program's name and a brief idea of what it does.&gt;
  298:     Copyright (C) &lt;year&gt;  &lt;name of author&gt;
  299: 
  300:     This program is free software; you can redistribute it and/or modify
  301:     it under the terms of the GNU General Public License as published by
  302:     the Free Software Foundation; either version 2 of the License, or
  303:     (at your option) any later version.
  304: 
  305:     This program is distributed in the hope that it will be useful,
  306:     but WITHOUT ANY WARRANTY; without even the implied warranty of
  307:     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  308:     GNU General Public License for more details.
  309: 
  310:     You should have received a copy of the GNU General Public License
  311:     along with this program; if not, write to the Free Software
  312:     Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  313: 
  314: 
  315: Also add information on how to contact you by electronic and paper mail.
  316: 
  317: If the program is interactive, make it output a short notice like this
  318: when it starts in an interactive mode:
  319: 
  320:     Gnomovision version 69, Copyright (C) year name of author
  321:     Gnomovision comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
  322:     This is free software, and you are welcome to redistribute it
  323:     under certain conditions; type `show c' for details.
  324: 
  325: The hypothetical commands `show w' and `show c' should show the appropriate
  326: parts of the General Public License.  Of course, the commands you use may
  327: be called something other than `show w' and `show c'; they could even be
  328: mouse-clicks or menu items--whatever suits your program.
  329: 
  330: You should also get your employer (if you work as a programmer) or your
  331: school, if any, to sign a "copyright disclaimer" for the program, if
  332: necessary.  Here is a sample; alter the names:
  333: 
  334:   Yoyodyne, Inc., hereby disclaims all copyright interest in the program
  335:   `Gnomovision' (which makes passes at compilers) written by James Hacker.
  336: 
  337:   &lt;signature of Ty Coon&gt;, 1 April 1989
  338:   Ty Coon, President of Vice
  339: 
  340: This General Public License does not permit incorporating your program into
  341: proprietary programs.  If your program is a subroutine library, you may
  342: consider it more useful to permit linking proprietary applications with the
  343: library.  If this is what you want to do, use the GNU Library General
  344: Public License instead of this License.
  345: </pre>