COPYING.EXCEPTIONS

    Notebook Linking Additional Permission, version 1

This Notebook Linking Additional Permission ("Additional Permission") is an
additional permission under section 7 of the GNU Affero General Public License,
version 3 ("AGPLv3").

It applies to any program that includes or references this Additional Permission.


1. DEFINITIONS

   "Notebooks" are files written by users that use the Jupyter Notebook frontend,
   or one of its reimplementations. These notebooks usually use the file extension
   ".ipynb" to store its data.

   "Cell outputs" are the automated outputs generated and displayed near the code
   within a Notebook.

   "Widgets" are interactive cell outputs. The "Widget State" refers to the
   configuration of a widget that is stored within the notebook. The Widget State
   can be influenced by you interacting with a widget.

2. Grant of Additional Permission

   Any code using the Program within a Notebook, is not based on this Program,
   even when it links (imports) it. This includes the Cell Output and Widget State
   it generates. It also does not propagate or convey the program. This means
   your notebooks' code, even if it includes widgets and imports to this Program,
   is not bound by the rules defined by the GNU Affero General Public License.

   The part of the Program responsible for implementing an interactible
   User Interface to the Widget State is kept separate from the Notebook and is
   not exempted by this Additional Permission. The AGPLv3 still applies to this
   part of the Program.

3. No weakening of Copyleft

   The availability of this Additional Permission does not imply any general
   presumption that software is unaffected by the copyleft requirements of the
   AGPLv3 license of this Program or another Program separately licensed under
   AGPLv3.

4. Reversed Versions of this Additional Permission

   The Yuuno Maintainers may publish revised
   and/or new versions of this Additional Permission 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 that a certain numbered version of this Additional Permission "or
   any later version" applies to it, you have the option of following the terms
   and conditions either of that numbered version or of any later version
   published by Conservancy.  If the Program does not specify a version number
   of this Additional Permission, you may choose any version ever published by
   the Yuuno Maintainers.
   
   If the Program specifies that a proxy can decide which future versions of
   this Additional Permission can be used, that proxy's public statement of
   acceptance of a version permanently authorizes you to choose that version for
   the Program.
   
   Later Additional Permission versions may give you additional or different
   permissions.  However, no additional obligations are imposed on any author or
   copyright holder as a result of your choosing to follow a later version.

5. Meta-License and attributions
   The actual text of this Additional Permission is made available under CC0.