# 📃 License

Thea is available under the GNU Lesser General Public License version 3.

> ## LGPL version 3
>
> ### 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
>
> -   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 Library is used in it and that the Library and its use are
>     covered by this License.
>
> -   b) Accompany the object code with a copy of the GNU GPL and this
>     license document.
>
> #### 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 document.
>
> -   c) For a Combined Work that displays copyright notices during
>     execution, include the copyright notice for the Library among
>     these notices, as well as a reference directing the user to the
>     copies of the GNU GPL and this license document.
>
> -   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 a copy of the Library already present on the user's
>         computer system, and (b) will operate properly with a modified
>         version of the Library that is interface-compatible with the
>         Linked Version.
>
> -   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.

Reference:
[GNU Lesser General Public License, version 3](http://www.gnu.org/licenses/lgpl-3.0.html)
