Open Source Software Licenses

The information in this document applies to this product

1.  Software Licensed under the GNU Library General Public License
     
  This product includes software licensed under the GNU Library
  General Public License (LGPL), Version 2.  Please see Appendix C
  below for the terms of this license.
   
  Specifically, the following software included in this product is
  subject to the LGPL:
   
    openal
   
  All software listed above is copyright by the respective author.
  Please see the source code for detailed information.

2.  Software Licensed under the Independent JPEG Group License
  
  This product includes software licensed under the Independent JPEG Group
  License.  Please see Appendix G below for the terms of this license.
  
  Specifically, the following software included in this product is
  subject to this license:
   
    libjpeg 6b
   
  All software listed above is copyright by the respective author.
  Please see the source code for detailed information.

3.  Software Licensed under the FreeType License
   
  This product includes software licensed under the FreeType License.  
  Please see Appendix J below for the terms of this license.
  
  Specifically, the following software included in this product is
  subject to the FreeType License:
   
    freetype
   
  All software listed above is copyright by the respective author.
  Please see the source code for detailed information.

4.  Software Licensed under the libpng License
  
  This product includes software licensed under the libpng License.  Please see
  Appendix K below for the terms of this license.
  
  Specifically, the following software included in this product is subject to
  the libpng license:
  
    libpng
  
  All software listed above is copyright by the respective author.
  Please see the source code for detailed information.

5.  Software Licensed under the zlib License
  
  This product includes software licensed under the zlib License.  Please see
  Appendix M below for the terms of this license.
  
  Specifically, the following software included in this product is subject to
  the zlib license:
  
    zlib
    zlib 1.1.4
	tinyxml
	zlib 1.2.5
  
  All software listed above is copyright by the respective author.
  Please see the source code for detailed information.

6.  Disclaimer
  
  All software listed in the above is provided without any liability
  or warranty from their copyright holders.

7.  Availability of Source Code

  Provided that you are interested in all the open source code embedded in this 
  product, please contact us at (opensource@hikvision.com). Noted that you are 
  responsible for copying and mailing a hard copy at your request. 


Appendix A

  		    GNU GENERAL PUBLIC LICENSE
  		       Version 2, June 1991
  
   Copyright (C) 1989, 1991 Free Software Foundation, Inc.
       59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
   Everyone is permitted to copy and distribute verbatim copies
   of this license document, but changing it is not allowed.
  
  			    Preamble
  
    The licenses for most software are designed to take away your
  freedom to share and change it.  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.  This
  General Public License applies to most of the Free Software
  Foundation's software and to any other program whose authors commit to
  using it.  (Some other Free Software Foundation software is covered by
  the GNU Library General Public License instead.)  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 restrictions that forbid
  anyone to deny you these rights or to ask you to surrender the rights.
  These restrictions translate to certain responsibilities for you if you
  distribute copies of the software, or if you modify it.
  
    For example, if you distribute copies of such a program, whether
  gratis or for a fee, you must give the recipients all the rights that
  you have.  You must make sure that they, too, receive or can get the
  source code.  And you must show them these terms so they know their
  rights.
  
    We protect your rights with two steps: (1) copyright the software, and
  (2) offer you this license which gives you legal permission to copy,
  distribute and/or modify the software.
  
    Also, for each author's protection and ours, we want to make certain
  that everyone understands that there is no warranty for this free
  software.  If the software is modified by someone else and passed on, we
  want its recipients to know that what they have is not the original, so
  that any problems introduced by others will not reflect on the original
  authors' reputations.
  
    Finally, any free program is threatened constantly by software
  patents.  We wish to avoid the danger that redistributors of a free
  program will individually obtain patent licenses, in effect making the
  program proprietary.  To prevent this, we have made it clear that any
  patent must be licensed for everyone's free use or not licensed at all.
  
    The precise terms and conditions for copying, distribution and
  modification follow.
  
  		    GNU GENERAL PUBLIC LICENSE
     TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION
  
    0. This License applies to any program or other work which contains
  a notice placed by the copyright holder saying it may be distributed
  under the terms of this General Public License.  The "Program", below,
  refers to any such program or work, and a "work based on the Program"
  means either the Program or any derivative work under copyright law:
  that is to say, a work containing the Program or a portion of it,
  either verbatim or with modifications and/or translated into another
  language.  (Hereinafter, translation is included without limitation in
  the term "modification".)  Each licensee is addressed as "you".
  
  Activities other than copying, distribution and modification are not
  covered by this License; they are outside its scope.  The act of
  running the Program is not restricted, and the output from the Program
  is covered only if its contents constitute a work based on the
  Program (independent of having been made by running the Program).
  Whether that is true depends on what the Program does.
  
    1. You may copy and distribute verbatim copies of the Program's
  source code as you receive it, in any medium, provided that you
  conspicuously and appropriately publish on each copy an appropriate
  copyright notice and disclaimer of warranty; keep intact all the
  notices that refer to this License and to the absence of any warranty;
  and give any other recipients of the Program a copy of this License
  along with the Program.
  
  You may charge a fee for the physical act of transferring a copy, and
  you may at your option offer warranty protection in exchange for a fee.
  
    2. You may modify your copy or copies of the Program or any portion
  of it, thus forming a work based on the Program, and copy and
  distribute such modifications or work under the terms of Section 1
  above, provided that you also meet all of these conditions:
  
      a) You must cause the modified files to carry prominent notices
      stating that you changed the files and the date of any change.
  
      b) You must cause any work that you distribute or publish, that in
      whole or in part contains or is derived from the Program or any
      part thereof, to be licensed as a whole at no charge to all third
      parties under the terms of this License.
  
      c) If the modified program normally reads commands interactively
      when run, you must cause it, when started running for such
      interactive use in the most ordinary way, to print or display an
      announcement including an appropriate copyright notice and a
      notice that there is no warranty (or else, saying that you provide
      a warranty) and that users may redistribute the program under
      these conditions, and telling the user how to view a copy of this
      License.  (Exception: if the Program itself is interactive but
      does not normally print such an announcement, your work based on
      the Program is not required to print an announcement.)
  
  These requirements apply to the modified work as a whole.  If
  identifiable sections of that work are not derived from the Program,
  and can be reasonably considered independent and separate works in
  themselves, then this License, and its terms, do not apply to those
  sections when you distribute them as separate works.  But when you
  distribute the same sections as part of a whole which is a work based
  on the Program, the distribution of the whole must be on the terms of
  this License, whose permissions for other licensees extend to the
  entire whole, and thus to each and every part regardless of who wrote it.
  
  Thus, it is not the intent of this section to claim rights or contest
  your rights to work written entirely by you; rather, the intent is to
  exercise the right to control the distribution of derivative or
  collective works based on the Program.
  
  In addition, mere aggregation of another work not based on the Program
  with the Program (or with a work based on the Program) on a volume of
  a storage or distribution medium does not bring the other work under
  the scope of this License.
  
    3. You may copy and distribute the Program (or a work based on it,
  under Section 2) in object code or executable form under the terms of
  Sections 1 and 2 above provided that you also do one of the following:
  
      a) Accompany it with the complete corresponding machine-readable
      source code, which must be distributed under the terms of Sections
      1 and 2 above on a medium customarily used for software interchange; or,
  
      b) Accompany it with a written offer, valid for at least three
      years, to give any third party, for a charge no more than your
      cost of physically performing source distribution, a complete
      machine-readable copy of the corresponding source code, to be
      distributed under the terms of Sections 1 and 2 above on a medium
      customarily used for software interchange; or,
  
      c) Accompany it with the information you received as to the offer
      to distribute corresponding source code.  (This alternative is
      allowed only for noncommercial distribution and only if you
      received the program in object code or executable form with such
      an offer, in accord with Subsection b above.)
  
  The source code for a work means the preferred form of the work for
  making modifications to it.  For an executable work, complete source
  code means all the source code for all modules it contains, plus any
  associated interface definition files, plus the scripts used to
  control compilation and installation of the executable.  However, as a
  special exception, the source code distributed need not include
  anything that is normally distributed (in either source or binary
  form) with the major components (compiler, kernel, and so on) of the
  operating system on which the executable runs, unless that component
  itself accompanies the executable.
  
  If distribution of executable or object code is made by offering
  access to copy from a designated place, then offering equivalent
  access to copy the source code from the same place counts as
  distribution of the source code, even though third parties are not
  compelled to copy the source along with the object code.
  
    4. You may not copy, modify, sublicense, or distribute the Program
  except as expressly provided under this License.  Any attempt
  otherwise to copy, modify, sublicense or distribute the Program is
  void, and will automatically terminate your rights under this License.
  However, parties who have received copies, or rights, from you under
  this License will not have their licenses terminated so long as such
  parties remain in full compliance.
  
    5. You are not required to accept this License, since you have not
  signed it.  However, nothing else grants you permission to modify or
  distribute the Program or its derivative works.  These actions are
  prohibited by law if you do not accept this License.  Therefore, by
  modifying or distributing the Program (or any work based on the
  Program), you indicate your acceptance of this License to do so, and
  all its terms and conditions for copying, distributing or modifying
  the Program or works based on it.
  
    6. Each time you redistribute the Program (or any work based on the
  Program), the recipient automatically receives a license from the
  original licensor to copy, distribute or modify the Program subject to
  these terms and conditions.  You may not impose any further
  restrictions on the recipients' exercise of the rights granted herein.
  You are not responsible for enforcing compliance by third parties to
  this License.
  
    7. If, as a consequence of a court judgment or allegation of patent
  infringement or for any other reason (not limited to patent issues),
  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
  distribute so as to satisfy simultaneously your obligations under this
  License and any other pertinent obligations, then as a consequence you
  may not distribute the Program at all.  For example, if a patent
  license would not permit royalty-free redistribution of the Program by
  all those who receive copies directly or indirectly through you, then
  the only way you could satisfy both it and this License would be to
  refrain entirely from distribution of the Program.
  
  If any portion of this section is held invalid or unenforceable under
  any particular circumstance, the balance of the section is intended to
  apply and the section as a whole is intended to apply in other
  circumstances.
  
  It is not the purpose of this section to induce you to infringe any
  patents or other property right claims or to contest validity of any
  such claims; this section has the sole purpose of protecting the
  integrity of the free software distribution system, which is
  implemented by public license practices.  Many people have made
  generous contributions to the wide range of software distributed
  through that system in reliance on consistent application of that
  system; it is up to the author/donor to decide if he or she is willing
  to distribute software through any other system and a licensee cannot
  impose that choice.
  
  This section is intended to make thoroughly clear what is believed to
  be a consequence of the rest of this License.
  
    8. If the distribution and/or use of the Program is restricted in
  certain countries either by patents or by copyrighted interfaces, the
  original copyright holder who places the Program under this License
  may add an explicit geographical distribution limitation excluding
  those countries, so that distribution is permitted only in or among
  countries not thus excluded.  In such case, this License incorporates
  the limitation as if written in the body of this License.
  
    9. The Free Software Foundation may publish revised and/or new versions
  of the General Public License from time to time.  Such new versions will
  be similar in spirit to the present version, but may differ in detail to
  address new problems or concerns.
  
  Each version is given a distinguishing version number.  If the Program
  specifies a version number of this License which applies to it and "any
  later version", you have the option of following the terms and conditions
  either of that version or of any later version published by the Free
  Software Foundation.  If the Program does not specify a version number of
  this License, you may choose any version ever published by the Free Software
  Foundation.
  
    10. If you wish to incorporate parts of the Program into other free
  programs whose distribution conditions are different, write to the author
  to ask for permission.  For software which is copyrighted by the Free
  Software Foundation, write to the Free Software Foundation; we sometimes
  make exceptions for this.  Our decision will be guided by the two goals
  of preserving the free status of all derivatives of our free software and
  of promoting the sharing and reuse of software generally.
  
  			    NO WARRANTY
  
    11. BECAUSE THE PROGRAM IS LICENSED FREE OF CHARGE, THERE IS NO WARRANTY
  FOR THE PROGRAM, TO THE EXTENT PERMITTED BY APPLICABLE LAW.  EXCEPT WHEN
  OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR OTHER PARTIES
  PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED
  OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
  MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.  THE ENTIRE RISK AS
  TO THE QUALITY AND PERFORMANCE OF THE PROGRAM IS WITH YOU.  SHOULD THE
  PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF ALL NECESSARY SERVICING,
  REPAIR OR CORRECTION.
  
    12. IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
  WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MAY MODIFY AND/OR
  REDISTRIBUTE THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES,
  INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING
  OUT OF THE USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED
  TO LOSS OF DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY
  YOU OR THIRD PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER
  PROGRAMS), EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE
  POSSIBILITY OF SUCH DAMAGES.
  
  		     END OF TERMS AND CONDITIONS
  
  	    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
  convey the exclusion of warranty; and each file should have at least
  the "copyright" line and a pointer to where the full notice is found.
  
      <one line to give the program's name and a brief idea of what it does.>
      Copyright (C) <year>  <name of author>
  
      This program is free software; you can redistribute it and/or modify
      it under the terms of the GNU General Public License as published by
      the Free Software Foundation; either version 2 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, write to the Free Software
      Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  
  
  Also add information on how to contact you by electronic and paper mail.
  
  If the program is interactive, make it output a short notice like this
  when it starts in an interactive mode:
  
      Gnomovision version 69, Copyright (C) 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'; they could even be
  mouse-clicks or menu items--whatever suits your program.
  
  You should also get your employer (if you work as a programmer) or your
  school, if any, to sign a "copyright disclaimer" for the program, if
  necessary.  Here 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.
  
    <signature of Ty Coon>, 1 April 1989
    Ty Coon, President of Vice
  
  This 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 Library General
  Public License instead of this License.

Appendix B

  This file is part of GCC.
  
  GCC 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 2, or (at your option) any later
  version.
  
  In addition to the permissions in the GNU General Public License, the
  Free Software Foundation gives you unlimited permission to link the
  compiled version of this file into combinations with other programs,
  and to distribute those combinations without any restriction coming
  from the use of this file.  (The General Public License restrictions
  do apply in other respects; for example, they cover modification of
  the file, and distribution when not linked into a combine
  executable.)
  
  GCC 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 GCC; see the file COPYING.  If not, write to the Free
  Software Foundation, 59 Temple Place - Suite 330, Boston, MA
  02111-1307, USA.

Appendix C

  		  GNU LIBRARY GENERAL PUBLIC LICENSE
  		       Version 2, June 1991
  
   Copyright (C) 1991 Free Software Foundation, Inc.
                      675 Mass Ave, Cambridge, MA 02139, USA
   Everyone is permitted to copy and distribute verbatim copies
   of this license document, but changing it is not allowed.
  
  [This is the first released version of the library GPL.  It is
   numbered 2 because it goes with version 2 of the ordinary GPL.]
  
  			    Preamble
  
    The licenses for most software are designed to take away your
  freedom to share and change it.  By contrast, the GNU General Public
  Licenses are intended to guarantee your freedom to share and change
  free software--to make sure the software is free for all its users.
  
    This license, the Library General Public License, applies to some
  specially designated Free Software Foundation software, and to any
  other libraries whose authors decide to use it.  You can use it for
  your libraries, 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 restrictions that forbid
  anyone to deny you these rights or to ask you to surrender the rights.
  These restrictions translate to certain responsibilities for you if
  you distribute copies of the library, or if you modify it.
  
    For example, if you distribute copies of the library, whether gratis
  or for a fee, you must give the recipients all the rights that we gave
  you.  You must make sure that they, too, receive or can get the source
  code.  If you link a program with the library, you must provide
  complete object files to the recipients so that they can relink them
  with the library, after making changes to the library and recompiling
  it.  And you must show them these terms so they know their rights.
  
    Our method of protecting your rights has two steps: (1) copyright
  the library, and (2) offer you this license which gives you legal
  permission to copy, distribute and/or modify the library.
  
    Also, for each distributor's protection, we want to make certain
  that everyone understands that there is no warranty for this free
  library.  If the library is modified by someone else and passed on, we
  want its recipients to know that what they have is not the original
  version, so that any problems introduced by others will not reflect on
  the original authors' reputations.
  
    Finally, any free program is threatened constantly by software
  patents.  We wish to avoid the danger that companies distributing free
  software will individually obtain patent licenses, thus in effect
  transforming the program into proprietary software.  To prevent this,
  we have made it clear that any patent must be licensed for everyone's
  free use or not licensed at all.
  
    Most GNU software, including some libraries, is covered by the ordinary
  GNU General Public License, which was designed for utility programs.  This
  license, the GNU Library General Public License, applies to certain
  designated libraries.  This license is quite different from the ordinary
  one; be sure to read it in full, and don't assume that anything in it is
  the same as in the ordinary license.
  
    The reason we have a separate public license for some libraries is that
  they blur the distinction we usually make between modifying or adding to a
  program and simply using it.  Linking a program with a library, without
  changing the library, is in some sense simply using the library, and is
  analogous to running a utility program or application program.  However, in
  a textual and legal sense, the linked executable is a combined work, a
  derivative of the original library, and the ordinary General Public License
  treats it as such.
  
    Because of this blurred distinction, using the ordinary General
  Public License for libraries did not effectively promote software
  sharing, because most developers did not use the libraries.  We
  concluded that weaker conditions might promote sharing better.
  
    However, unrestricted linking of non-free programs would deprive the
  users of those programs of all benefit from the free status of the
  libraries themselves.  This Library General Public License is intended to
  permit developers of non-free programs to use free libraries, while
  preserving your freedom as a user of such programs to change the free
  libraries that are incorporated in them.  (We have not seen how to achieve
  this as regards changes in header files, but we have achieved it as regards
  changes in the actual functions of the Library.)  The hope is that this
  will lead to faster development of free libraries.
  
    The precise terms and conditions for copying, distribution and
  modification follow.  Pay close attention to the difference between a
  "work based on the library" and a "work that uses the library".  The
  former contains code derived from the library, while the latter only
  works together with the library.
  
    Note that it is possible for a library to be covered by the ordinary
  General Public License rather than by this special one.
  
  		  GNU LIBRARY GENERAL PUBLIC LICENSE
     TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION
  
    0. This License Agreement applies to any software library which
  contains a notice placed by the copyright holder or other authorized
  party saying it may be distributed under the terms of this Library
  General Public License (also called "this License").  Each licensee is
  addressed as "you".
  
    A "library" means a collection of software functions and/or data
  prepared so as to be conveniently linked with application programs
  (which use some of those functions and data) to form executables.
  
    The "Library", below, refers to any such software library or work
  which has been distributed under these terms.  A "work based on the
  Library" means either the Library or any derivative work under
  copyright law: that is to say, a work containing the Library or a
  portion of it, either verbatim or with modifications and/or translated
  straightforwardly into another language.  (Hereinafter, translation is
  included without limitation in the term "modification".)
  
    "Source code" for a work means the preferred form of the work for
  making modifications to it.  For a library, complete source code means
  all the source code for all modules it contains, plus any associated
  interface definition files, plus the scripts used to control compilation
  and installation of the library.
  
    Activities other than copying, distribution and modification are not
  covered by this License; they are outside its scope.  The act of
  running a program using the Library is not restricted, and output from
  such a program is covered only if its contents constitute a work based
  on the Library (independent of the use of the Library in a tool for
  writing it).  Whether that is true depends on what the Library does
  and what the program that uses the Library does.
    
    1. You may copy and distribute verbatim copies of the Library's
  complete source code as you receive it, in any medium, provided that
  you conspicuously and appropriately publish on each copy an
  appropriate copyright notice and disclaimer of warranty; keep intact
  all the notices that refer to this License and to the absence of any
  warranty; and distribute a copy of this License along with the
  Library.
  
    You may charge a fee for the physical act of transferring a copy,
  and you may at your option offer warranty protection in exchange for a
  fee.
  
    2. You may modify your copy or copies of the Library or any portion
  of it, thus forming a work based on the Library, and copy and
  distribute such modifications or work under the terms of Section 1
  above, provided that you also meet all of these conditions:
  
      a) The modified work must itself be a software library.
  
      b) You must cause the files modified to carry prominent notices
      stating that you changed the files and the date of any change.
  
      c) You must cause the whole of the work to be licensed at no
      charge to all third parties under the terms of this License.
  
      d) If a facility in the modified Library refers to a function or a
      table of data to be supplied by an application program that uses
      the facility, other than as an argument passed when the facility
      is invoked, then you must make a good faith effort to ensure that,
      in the event an application does not supply such function or
      table, the facility still operates, and performs whatever part of
      its purpose remains meaningful.
  
      (For example, a function in a library to compute square roots has
      a purpose that is entirely well-defined independent of the
      application.  Therefore, Subsection 2d requires that any
      application-supplied function or table used by this function must
      be optional: if the application does not supply it, the square
      root function must still compute square roots.)
  
  These requirements apply to the modified work as a whole.  If
  identifiable sections of that work are not derived from the Library,
  and can be reasonably considered independent and separate works in
  themselves, then this License, and its terms, do not apply to those
  sections when you distribute them as separate works.  But when you
  distribute the same sections as part of a whole which is a work based
  on the Library, the distribution of the whole must be on the terms of
  this License, whose permissions for other licensees extend to the
  entire whole, and thus to each and every part regardless of who wrote
  it.
  
  Thus, it is not the intent of this section to claim rights or contest
  your rights to work written entirely by you; rather, the intent is to
  exercise the right to control the distribution of derivative or
  collective works based on the Library.
  
  In addition, mere aggregation of another work not based on the Library
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  That's all there is to it!

Appendix F

  
                    GNU LESSER GENERAL PUBLIC LICENSE
                         Version 2.1, February 1999
  
   Copyright (C) 1991, 1999 Free Software Foundation, Inc.
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  [This is the first released version of the Lesser GPL.  It also counts
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    It may happen that this requirement contradicts the license
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  distribute.
  
    7. You may place library facilities that are a work based on the
  Library side-by-side in a single library together with other library
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      b) Give prominent notice with the combined library of the fact
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    8. You may not copy, modify, sublicense, link with, or distribute
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  infringement or for any other reason (not limited to patent issues),
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  impose that choice.
  
  This section is intended to make thoroughly clear what is believed to
  be a consequence of the rest of this License.
  
    12. If the distribution and/or use of the Library is restricted in
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  original copyright holder who places the Library under this License
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  countries not thus excluded.  In such case, this License incorporates
  the limitation as if written in the body of this License.
  
    13. The Free Software Foundation may publish revised and/or new
  versions of the Lesser 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 Library
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    14. If you wish to incorporate parts of the Library into other free
  programs whose distribution conditions are incompatible with these,
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  copyrighted by the Free Software Foundation, write to the Free
  Software Foundation; we sometimes make exceptions for this.  Our
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  of all derivatives of our free software and of promoting the sharing
  and reuse of software generally.
  
                              NO WARRANTY
  
    15. BECAUSE THE LIBRARY IS LICENSED FREE OF CHARGE, THERE IS NO
  WARRANTY FOR THE LIBRARY, TO THE EXTENT PERMITTED BY APPLICABLE LAW.
  EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR
  OTHER PARTIES PROVIDE THE LIBRARY "AS IS" WITHOUT WARRANTY OF ANY
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  RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD PARTIES OR A
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  DAMAGES.
  
                       END OF TERMS AND CONDITIONS
  
             How to Apply These Terms to Your New Libraries
  
    If you develop a new library, and you want it to be of the greatest
  possible use to the public, we recommend making it free software that
  everyone can redistribute and change.  You can do so by permitting
  redistribution under these terms (or, alternatively, under the terms
  of the ordinary General Public License).
  
    To apply these terms, attach the following notices to the library.
  It is safest to attach them to the start of each source file to most
  effectively convey the exclusion of warranty; and each file should
  have at least the "copyright" line and a pointer to where the full
  notice is found.
  
  
      <one line to give the library's name and a brief idea of what it does.>
      Copyright (C) <year>  <name of author>
  
      This library is free software; you can redistribute it and/or
      modify it under the terms of the GNU Lesser General Public
      License as published by the Free Software Foundation; either
      version 2.1 of the License, or (at your option) any later version.
  
      This library 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
      Lesser General Public License for more details.
  
      You should have received a copy of the GNU Lesser General Public
      License along with this library; if not, write to the Free Software
      Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
  
  Also add information on how to contact you by electronic and paper mail.
  
  You should also get your employer (if you work as a programmer) or
  your school, if any, to sign a "copyright disclaimer" for the library,
  if necessary.  Here is a sample; alter the names:
  
    Yoyodyne, Inc., hereby disclaims all copyright interest in the
    library `Frob' (a library for tweaking knobs) written by James
    Random Hacker.
  
    <signature of Ty Coon>, 1 April 1990
    Ty Coon, President of Vice
  
  That's all there is to it!
  
  

Appendix G

  Independent JPEG Group License
  LEGAL ISSUES

  In plain English:

    1. We don't promise that this software works. (But if you find any bugs, please 
  let us know!) 
    2. You can use this software for whatever you want. You don't have to pay us. 
    3. You may not pretend that you wrote this software. If you use it in a program, 
  you must acknowledge somewhere in your documentation that you've used the IJG code.

    In legalese:

    The authors make NO WARRANTY or representation, either express or implied, with 
  respect to this software, its quality, accuracy, merchantability, or fitness for 
  a particular purpose. This software is provided "AS IS", and you, its user, assume
  the entire risk as to its quality and accuracy.

    This software is copyright (C) 1991-1998, Thomas G. Lane. All Rights Reserved 
  except as specified below.

  Permission is hereby granted to use, copy, modify, and distribute this software 
  (or portions thereof) for any purpose, without fee, subject to these conditions:

    (1) If any part of the source code for this software is distributed, then this 
  README file must be included, with this copyright and no-warranty notice unaltered;
  and any additions, deletions, or changes to the original files must be clearly
  indicated in accompanying documentation. 
    (2) If only executable code is distributed, then the accompanying documentation
  must state that "this software is based in part on the work of the Independent JPEG
  Group". 
    (3) Permission for use of this software is granted only if the user accepts full
  responsibility for any undesirable consequences; the authors accept NO LIABILITY
  for damages of any kind.

    These conditions apply to any software derived from or based on the IJG code,
  not just to the unmodified library. If you use our work, you ought to acknowledge us.

    Permission is NOT granted for the use of any IJG author's name or company name
  in advertising or publicity relating to this software or products derived from it.
  This software may be referred to only as "the Independent JPEG Group's software".

    We specifically permit and encourage the use of this software as the basis of
  commercial products, provided that all warranty or liability claims are assumed
  by the product vendor.

    ansi2knr.c is included in this distribution by permission of L. Peter Deutsch,
  sole proprietor of its copyright holder, Aladdin Enterprises of Menlo Park, CA.
  ansi2knr.c is NOT covered by the above copyright and conditions, but instead by
  the usual distribution terms of the Free Software Foundation; principally, that
  you must include source code if you redistribute it. (See the file ansi2knr.c for
  full details.) However, since ansi2knr.c is not needed as part of any program
  generated from the IJG code, this does not limit you more than the foregoing
  paragraphs do.

    The Unix configuration script "configure" was produced with GNU Autoconf.
  It is copyright by the Free Software Foundation but is freely distributable.
  The same holds for its supporting scripts (config.guess, config.sub, ltconfig,
  ltmain.sh). Another support script, install-sh, is copyright by M.I.T. but is
  also freely distributable.

    It appears that the arithmetic coding option of the JPEG spec is covered by
  patents owned by IBM, AT&T, and Mitsubishi. Hence arithmetic coding cannot
  legally be used without obtaining one or more licenses. For this reason, support
  for arithmetic coding has been removed from the free JPEG software. (Since
  arithmetic coding provides only a marginal gain over the unpatented Huffman
  mode, it is unlikely that very many implementations will support it.) So far
  as we are aware, there are no patent restrictions on the remaining code.

    The IJG distribution formerly included code to read and write GIF files. To
  avoid entanglement with the Unisys LZW patent, GIF reading support has been
  removed altogether, and the GIF writer has been simplified to produce
  "uncompressed GIFs". This technique does not use the LZW algorithm; the
  resulting GIF files are larger than usual, but are readable by all standard
  GIF decoders.

    We are required to state that "The Graphics Interchange Format(c) is the
  Copyright property of CompuServe Incorporated. GIF(sm) is a Service Mark
  property of CompuServe Incorporated."

Appendix H

  Permission is hereby granted, free of charge, to any person obtaining a copy
  of this software and associated documentation files (the "Software"), to deal
  in the Software without restriction, including without limitation the rights
  to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
  copies of the Software, and to permit persons to whom the Software is fur-
  nished to do so, subject to the following conditions:
  
  The above copyright notice and this permission notice shall be included in
  all copies or substantial portions of the Software.
  
  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
  AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
  THE SOFTWARE.

Appendix I

  Redistribution and use in source and binary forms, with or without
  modification, are permitted provided that the following conditions
  are met:
  
  1. Redistributions of source code must retain the above copyright
     notice, this list of conditions and the following disclaimer. 
  
  2. Redistributions in binary form must reproduce the above copyright
     notice, this list of conditions and the following disclaimer in
     the documentation and/or other materials provided with the
     distribution.
  
  3. All advertising materials mentioning features or use of this
     software must display the following acknowledgment:
     "This product includes software developed by the OpenSSL Project
     for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
  
  4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
     endorse or promote products derived from this software without
     prior written permission. For written permission, please contact
     openssl-core@openssl.org.
  
  5. Products derived from this software may not be called "OpenSSL"
     nor may "OpenSSL" appear in their names without prior written
     permission of the OpenSSL Project.
  
  6. Redistributions of any form whatsoever must retain the following
     acknowledgment:
     "This product includes software developed by the OpenSSL Project
     for use in the OpenSSL Toolkit (http://www.openssl.org/)"
  
  THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
  EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
  ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
  STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
  OF THE POSSIBILITY OF SUCH DAMAGE.

Appendix J

                      The FreeType Project LICENSE
                      ----------------------------
  
                              2006-Jan-27
  
                      Copyright 1996-2002, 2006 by
            David Turner, Robert Wilhelm, and Werner Lemberg
  
  
  
  Introduction
  ============
  
    The FreeType  Project is distributed in  several archive packages;
    some of them may contain, in addition to the FreeType font engine,
    various tools and  contributions which rely on, or  relate to, the
    FreeType Project.
  
    This  license applies  to all  files found  in such  packages, and
    which do not  fall under their own explicit  license.  The license
    affects  thus  the  FreeType   font  engine,  the  test  programs,
    documentation and makefiles, at the very least.
  
    This  license   was  inspired  by  the  BSD,   Artistic,  and  IJG
    (Independent JPEG  Group) licenses, which  all encourage inclusion
    and  use of  free  software in  commercial  and freeware  products
    alike.  As a consequence, its main points are that:
  
      o We don't promise that this software works. However, we will be
        interested in any kind of bug reports. (`as is' distribution)
  
      o You can  use this software for whatever you  want, in parts or
        full form, without having to pay us. (`royalty-free' usage)
  
      o You may not pretend that  you wrote this software.  If you use
        it, or  only parts of it,  in a program,  you must acknowledge
        somewhere  in  your  documentation  that  you  have  used  the
        FreeType code. (`credits')
  
    We  specifically  permit  and  encourage  the  inclusion  of  this
    software, with  or without modifications,  in commercial products.
    We  disclaim  all warranties  covering  The  FreeType Project  and
    assume no liability related to The FreeType Project.
  
  
    Finally,  many  people  asked  us  for  a  preferred  form  for  a
    credit/disclaimer to use in compliance with this license.  We thus
    encourage you to use the following text:
  
     """  
      Portions of this software are copyright © <year> The FreeType
      Project (www.freetype.org).  All rights reserved.
     """
  
    Please replace <year> with the value from the FreeType version you
    actually use.
  
  
  Legal Terms
  ===========
  
  0. Definitions
  --------------
  
    Throughout this license,  the terms `package', `FreeType Project',
    and  `FreeType  archive' refer  to  the  set  of files  originally
    distributed  by the  authors  (David Turner,  Robert Wilhelm,  and
    Werner Lemberg) as the `FreeType Project', be they named as alpha,
    beta or final release.
  
    `You' refers to  the licensee, or person using  the project, where
    `using' is a generic term including compiling the project's source
    code as  well as linking it  to form a  `program' or `executable'.
    This  program is  referred to  as  `a program  using the  FreeType
    engine'.
  
    This  license applies  to all  files distributed  in  the original
    FreeType  Project,   including  all  source   code,  binaries  and
    documentation,  unless  otherwise  stated   in  the  file  in  its
    original, unmodified form as  distributed in the original archive.
    If you are  unsure whether or not a particular  file is covered by
    this license, you must contact us to verify this.
  
    The FreeType  Project is copyright (C) 1996-2000  by David Turner,
    Robert Wilhelm, and Werner Lemberg.  All rights reserved except as
    specified below.
  
  1. No Warranty
  --------------
  
    THE FREETYPE PROJECT  IS PROVIDED `AS IS' WITHOUT  WARRANTY OF ANY
    KIND, EITHER  EXPRESS OR IMPLIED,  INCLUDING, BUT NOT  LIMITED TO,
    WARRANTIES  OF  MERCHANTABILITY   AND  FITNESS  FOR  A  PARTICULAR
    PURPOSE.  IN NO EVENT WILL ANY OF THE AUTHORS OR COPYRIGHT HOLDERS
    BE LIABLE  FOR ANY DAMAGES CAUSED  BY THE USE OR  THE INABILITY TO
    USE, OF THE FREETYPE PROJECT.
  
  2. Redistribution
  -----------------
  
    This  license  grants  a  worldwide, royalty-free,  perpetual  and
    irrevocable right  and license to use,  execute, perform, compile,
    display,  copy,   create  derivative  works   of,  distribute  and
    sublicense the  FreeType Project (in  both source and  object code
    forms)  and  derivative works  thereof  for  any  purpose; and  to
    authorize others  to exercise  some or all  of the  rights granted
    herein, subject to the following conditions:
  
      o Redistribution of  source code  must retain this  license file
        (`FTL.TXT') unaltered; any  additions, deletions or changes to
        the original  files must be clearly  indicated in accompanying
        documentation.   The  copyright   notices  of  the  unaltered,
        original  files must  be  preserved in  all  copies of  source
        files.
  
      o Redistribution in binary form must provide a  disclaimer  that
        states  that  the software is based in part of the work of the
        FreeType Team,  in  the  distribution  documentation.  We also
        encourage you to put an URL to the FreeType web page  in  your
        documentation, though this isn't mandatory.
  
    These conditions  apply to any  software derived from or  based on
    the FreeType Project,  not just the unmodified files.   If you use
    our work, you  must acknowledge us.  However, no  fee need be paid
    to us.
  
  3. Advertising
  --------------
  
    Neither the  FreeType authors and  contributors nor you  shall use
    the name of the  other for commercial, advertising, or promotional
    purposes without specific prior written permission.
  
    We suggest,  but do not require, that  you use one or  more of the
    following phrases to refer  to this software in your documentation
    or advertising  materials: `FreeType Project',  `FreeType Engine',
    `FreeType library', or `FreeType Distribution'.
  
    As  you have  not signed  this license,  you are  not  required to
    accept  it.   However,  as  the FreeType  Project  is  copyrighted
    material, only  this license, or  another one contracted  with the
    authors, grants you  the right to use, distribute,  and modify it.
    Therefore,  by  using,  distributing,  or modifying  the  FreeType
    Project, you indicate that you understand and accept all the terms
    of this license.
  
  4. Contacts
  -----------
  
    There are two mailing lists related to FreeType:
  
      o freetype@nongnu.org
  
        Discusses general use and applications of FreeType, as well as
        future and  wanted additions to the  library and distribution.
        If  you are looking  for support,  start in  this list  if you
        haven't found anything to help you in the documentation.
  
      o freetype-devel@nongnu.org
  
        Discusses bugs,  as well  as engine internals,  design issues,
        specific licenses, porting, etc.
  
    Our home page can be found at
  
      http://www.freetype.org
  

Appendix K

                              libpng-LICENSE
                              --------------

  This copy of the libpng notices is provided for your convenience.  In case of
  any discrepancy between this copy and the notices in the file png.h that is
  included in the libpng distribution, the latter shall prevail.
  
  COPYRIGHT NOTICE, DISCLAIMER, and LICENSE:
  
  If you modify libpng you may insert additional notices immediately following
  this sentence.
  
  This code is released under the libpng license.
  
  libpng versions 1.0.7, July 1, 2000 through 1.6.26, October 20, 2016 are
  Copyright (c) 2000-2002, 2004, 2006-2016 Glenn Randers-Pehrson, are
  derived from libpng-1.0.6, and are distributed according to the same
  disclaimer and license as libpng-1.0.6 with the following individuals
  added to the list of Contributing Authors:
  
     Simon-Pierre Cadieux
     Eric S. Raymond
     Mans Rullgard
     Cosmin Truta
     Gilles Vollant
     James Yu
  
  and with the following additions to the disclaimer:
  
     There is no warranty against interference with your enjoyment of the
     library or against infringement.  There is no warranty that our
     efforts or the library will fulfill any of your particular purposes
     or needs.  This library is provided with all faults, and the entire
     risk of satisfactory quality, performance, accuracy, and effort is with
     the user.
  
  Some files in the "contrib" directory and some configure-generated
  files that are distributed with libpng have other copyright owners and
  are released under other open source licenses.
  
  libpng versions 0.97, January 1998, through 1.0.6, March 20, 2000, are
  Copyright (c) 1998-2000 Glenn Randers-Pehrson, are derived from
  libpng-0.96, and are distributed according to the same disclaimer and
  license as libpng-0.96, with the following individuals added to the list
  of Contributing Authors:
  
     Tom Lane
     Glenn Randers-Pehrson
     Willem van Schaik
  
  libpng versions 0.89, June 1996, through 0.96, May 1997, are
  Copyright (c) 1996-1997 Andreas Dilger, are derived from libpng-0.88,
  and are distributed according to the same disclaimer and license as
  libpng-0.88, with the following individuals added to the list of
  Contributing Authors:
  
     John Bowler
     Kevin Bracey
     Sam Bushell
     Magnus Holmgren
     Greg Roelofs
     Tom Tanner
  
  Some files in the "scripts" directory have other copyright owners
  but are released under this license.
  
  libpng versions 0.5, May 1995, through 0.88, January 1996, are
  Copyright (c) 1995-1996 Guy Eric Schalnat, Group 42, Inc.
  
  For the purposes of this copyright and license, "Contributing Authors"
  is defined as the following set of individuals:
  
     Andreas Dilger
     Dave Martindale
     Guy Eric Schalnat
     Paul Schmidt
     Tim Wegner
  
  The PNG Reference Library is supplied "AS IS".  The Contributing Authors
  and Group 42, Inc. disclaim all warranties, expressed or implied,
  including, without limitation, the warranties of merchantability and of
  fitness for any purpose.  The Contributing Authors and Group 42, Inc.
  assume no liability for direct, indirect, incidental, special, exemplary,
  or consequential damages, which may result from the use of the PNG
  Reference Library, even if advised of the possibility of such damage.
  
  Permission is hereby granted to use, copy, modify, and distribute this
  source code, or portions hereof, for any purpose, without fee, subject
  to the following restrictions:
  
    1. The origin of this source code must not be misrepresented.
  
    2. Altered versions must be plainly marked as such and must not
       be misrepresented as being the original source.
  
    3. This Copyright notice may not be removed or altered from any
       source or altered source distribution.
  
  The Contributing Authors and Group 42, Inc. specifically permit, without
  fee, and encourage the use of this source code as a component to
  supporting the PNG file format in commercial products.  If you use this
  source code in a product, acknowledgment is not required but would be
  appreciated.
  
  END OF COPYRIGHT NOTICE, DISCLAIMER, and LICENSE.
  
  TRADEMARK:
  
  The name "libpng" has not been registered by the Copyright owner
  as a trademark in any jurisdiction.  However, because libpng has
  been distributed and maintained world-wide, continually since 1995,
  the Copyright owner claims "common-law trademark protection" in any
  jurisdiction where common-law trademark is recognized.
  
  OSI CERTIFICATION:
  
  Libpng is OSI Certified Open Source Software.  OSI Certified Open Source is
  a certification mark of the Open Source Initiative. OSI has not addressed
  the additional disclaimers inserted at version 1.0.7.
  
  EXPORT CONTROL:
  
  The Copyright owner believes that the Export Control Classification
  Number (ECCN) for libpng is EAR99, which means not subject to export
  controls or International Traffic in Arms Regulations (ITAR) because
  it is open source, publicly available software, that does not contain
  any encryption software.  See the EAR, paragraphs 734.3(b)(3) and
  734.7(b).
  
  Glenn Randers-Pehrson
  glennrp at users.sourceforge.net
  October 20, 2016


Appendix L

                              Apache License
                           Version 2.0, January 2004
                        http://www.apache.org/licenses/

   TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION

   1. Definitions.

      "License" shall mean the terms and conditions for use, reproduction,
      and distribution as defined by Sections 1 through 9 of this document.

      "Licensor" shall mean the copyright owner or entity authorized by
      the copyright owner that is granting the License.

      "Legal Entity" shall mean the union of the acting entity and all
      other entities that control, are controlled by, or are under common
      control with that entity. For the purposes of this definition,
      "control" means (i) the power, direct or indirect, to cause the
      direction or management of such entity, whether by contract or
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Appendix M

                               zlib-LICENSE
                              --------------

  zlib.h -- interface of the 'zlib' general purpose compression library
  version 1.2.11, January 15th, 2017

  Copyright (C) 1995-2017 Jean-loup Gailly and Mark Adler

  This software is provided 'as-is', without any express or implied
  warranty.  In no event will the authors be held liable for any damages
  arising from the use of this software.

  Permission is granted to anyone to use this software for any purpose,
  including commercial applications, and to alter it and redistribute it
  freely, subject to the following restrictions:

  1. The origin of this software must not be misrepresented; you must not
     claim that you wrote the original software. If you use this software
     in a product, an acknowledgment in the product documentation would be
     appreciated but is not required.
  2. Altered source versions must be plainly marked as such, and must not be
     misrepresented as being the original software.
  3. This notice may not be removed or altered from any source distribution.

  Jean-loup Gailly        Mark Adler
  jloup@gzip.org          madler@alumni.caltech.edu

Appendix N

                        Software Licensed from my97.net
                    --------------------------------------

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