If you’re reading this post, you probably know what a super user program is or does.

Nope. That struck me a pretentiously pompous. Likely not meant that way, but that is how it seemed.

For a given page on the Internet, there are multiple ways it can be found and reached, and it is not guaranteed that it will be within the author's context.

You're right; I'll edit it. Thanks for pointing that out!

Thank you, it is super helpful!

Oh, wow, I was pretty confused. This is not about designing a powerful piece of software for trusted members of your invite-only artist community or whatever. :'D

Could you clarify what you mean by this?

In the context of HN, the more likely meaning of the term "super user program" is "a computer program for delegating/managing 'super user' privileges".

So, the expectation, based on the title, was likely that of "how to write such a computer program" :)

Oh interesting; thanks for clarifying!