SaveLoad module and saving file structure
==========================================

The saving file for ErwinJr2 is a json file discribing the structure of QC
layers and optical waveguide.

The save and load functions is independently functioning as the `SaveLoad`
module.

.. automodule:: ErwinJr2.SaveLoad
   :members:


.. _sample_json_file:

Here is a sample json file

.. literalinclude:: ../ErwinJr2/example/PQLiu.json
   :language: json