2019.08.04 VERSION 0.1

You can use this article freely for learning purpose only.

Following terms should be followed.
NoDerivatives:
    Partial copy and any redistribution after modification is not allowed.
    If you remix, transform, or build upon this article,
    you may not distribute the modified one.
NonCommercial:
    You may not use this article for commercial purposes.

Exclude:
    Special access right has granted to @Nonad for writing our new document.
    She is allowed to bypass all the restrictions above.