                   GNU LESSER GENERAL PUBLIC LICENSE


                       Version 3, 29 June 2007





 Copyright (C) 2007 Free Software Foundation, Inc. <https://fsf.org/>


 Everyone is permitted to copy and distribute verbatim copies


 of this license document, but changing it is not allowed.








  This version of the GNU Lesser General Public License incorporates


the terms and conditions of version 3 of the GNU General Public


License, supplemented by the additional permissions listed below.





  0. Additional Definitions.





  As used herein, "this License" refers to version 3 of the GNU Lesser


General Public License, and the "GNU GPL" refers to version 3 of the GNU


General Public License.





  "The Library" refers to a covered work governed by this License,


other than an Application or a Combined Work as defined below.





  An "Application" is any work that makes use of an interface provided


by the Library, but which is not otherwise based on the Library.


Defining a subclass of a class defined by the Library is deemed a mode


of using an interface provided by the Library.





  A "Combined Work" is a work produced by combining or linking an


Application with the Library.  The particular version of the Library


with which the Combined Work was made is also called the "Linked


Version".





  The "Minimal Corresponding Source" for a Combined Work means the


Corresponding Source for the Combined Work, excluding any source code


for portions of the Combined Work that, considered in isolation, are


based on the Application, and not on the Linked Version.





  The "Corresponding Application Code" for a Combined Work means the


object code and/or source code for the Application, including any data


and utility programs needed for reproducing the Combined Work from the


Application, but excluding the System Libraries of the Combined Work.





  1. Exception to Section 3 of the GNU GPL.





  You may convey a covered work under sections 3 and 4 of this License


without being bound by section 3 of the GNU GPL.





  2. Conveying Modified Versions.





  If you modify a copy of the Library, and, in your modifications, a


facility refers to a function or data to be supplied by an Application


that uses the facility (other than as an argument passed when the


facility is invoked), then you may convey a copy of the modified


version:





   a) under this License, provided that you make a good faith effort to


   ensure that, in the event an Application does not supply the


   function or data, the facility still operates, and performs


   whatever part of its purpose remains meaningful, or





   b) under the GNU GPL, with none of the additional permissions of


   this License applicable to that copy.





  3. Object Code Incorporating Material from Library Header Files.





  The object code form of an Application may incorporate material from


a header file that is part of the Library.  You may convey such object


code under terms of your choice, provided that, if the incorporated


material is not limited to numerical parameters, data structure


layouts and accessors, or small macros, inline functions and templates


(ten or fewer lines in length), you do both of the following:





   a) Give prominent notice with each copy of the object code that the


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   covered by this License.





   b) Accompany the object code with a copy of the GNU GPL and this license


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  4. Combined Works.





  You may convey a Combined Work under terms of your choice that,


taken together, effectively do not restrict modification of the


portions of the Library contained in the Combined Work and reverse


engineering for debugging such modifications, if you also do each of


the following:





   a) Give prominent notice with each copy of the Combined Work that


   the Library is used in it and that the Library and its use are


   covered by this License.





   b) Accompany the Combined Work with a copy of the GNU GPL and this license


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   c) For a Combined Work that displays copyright notices during


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   d) Do one of the following:





       0) Convey the Minimal Corresponding Source under the terms of this


       License, and the Corresponding Application Code in a form


       suitable for, and under terms that permit, the user to


       recombine or relink the Application with a modified version of


       the Linked Version to produce a modified Combined Work, in the


       manner specified by section 6 of the GNU GPL for conveying


       Corresponding Source.





       1) Use a suitable shared library mechanism for linking with the


       Library.  A suitable mechanism is one that (a) uses at run time


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       system, and (b) will operate properly with a modified version


       of the Library that is interface-compatible with the Linked


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   e) Provide Installation Information, but only if you would otherwise


   be required to provide such information under section 6 of the


   GNU GPL, and only to the extent that such information is


   necessary to install and execute a modified version of the


   Combined Work produced by recombining or relinking the


   Application with a modified version of the Linked Version. (If


   you use option 4d0, the Installation Information must accompany


   the Minimal Corresponding Source and Corresponding Application


   Code. If you use option 4d1, you must provide the Installation


   Information in the manner specified by section 6 of the GNU GPL


   for conveying Corresponding Source.)





  5. Combined Libraries.





  You may place library facilities that are a work based on the


Library side by side in a single library together with other library


facilities that are not Applications and are not covered by this


License, and convey such a combined library under terms of your


choice, if you do both of the following:





   a) Accompany the combined library with a copy of the same work based


   on the Library, uncombined with any other library facilities,


   conveyed under the terms of this License.





   b) Give prominent notice with the combined library that part of it


   is a work based on the Library, and explaining where to find the


   accompanying uncombined form of the same work.





  6. Revised Versions of the GNU Lesser General Public License.





  The Free Software Foundation may publish revised and/or new versions


of the GNU 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 as you received it specifies that a certain numbered version


of the GNU Lesser General Public License "or any later version"


applies to it, you have the option of following the terms and


conditions either of that published version or of any later version


published by the Free Software Foundation. If the Library as you


received it does not specify a version number of the GNU Lesser


General Public License, you may choose any version of the GNU Lesser


General Public License ever published by the Free Software Foundation.





  If the Library as you received it specifies that a proxy can decide


whether future versions of the GNU Lesser General Public License shall


apply, that proxy's public statement of acceptance of any version is


permanent authorization for you to choose that version for the


Library.


