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Hey Jason,
Thanks for your feedback! I'll see how it can be improved in future.
I'm not sure I understand your request correctly. The english version contains comments in english. Russian comments are only in russian version.
I plan to add tests in the next edition of the course. Existing users will get free upgrade.
Thanks for your feedback!
Спасибо и вам за отзыв!
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Thanks for your feedback, Richard!