How to write to a person in habrahabr?

Question

Habr

Hello, I have a question, maybe an idiotic plan, but still I can’t find it in any way.
I found an interesting article in the sandbox, the author of the article is well-known, and he even visits Habr very often. I have a question for him about the settings he made in one of the posts, but there is no comments tab in the sandbox in that topic, and as a result, I can’t ask my question in any way.
Maybe I'm blind? But still I can not find or understand how to do it?

Answer 1

Which sandbox? If habrahabr.ru/sandbox , then nothing (except for sending an invite to the author if you have one, invites are issued for posts with a large number of pluses, etc.), and the names of the authors are randomly assigned to UFOs there.

Answer 2

In the person's profile (click on the nickname) on the right - an envelope. If the person is registered there, of course.

Answer 3

Usually people indicate their contact details there. Well, or you can google a little.
With a RO-account in the LAN, you can’t write on Habré.