Create a test version of the notebook according to TZ

I didn’t expect such a quick task. The task has been performed well! Artem even exceeded my expectations, since in the course of the implementation there were a few opportunities to improve the initial idea. It was an impression that Artem does the job not for me, but for himself! I strongly recommend! I have the next task for him!

All great, clear TZ and the design of the program.
I will be happy to cooperate in the future!