Relative to whatever boundary or place marker you're concerned with.

Where is the topographic feature, the limit, the declaration, by which we can wonder what lies beyond.

Indeed. But people usually don't mention this border between the here and the beyond.

But people usually don't mention this border between the here and the beyond. — TiredThinker

They do, though. The phrase is applied in specific contexts, such as "above and beyond the call of duty", which means that the soldier or police officer performed some action that took exertion, courage or sacrifice above what can be normally expected, and beyond the confines of their job description: ie, something both more and better than they were required to do.

What is expected of a person isn't always clear, and many people's duties are to do what needs to be done.

What is expected of a person isn't always clear, and many people's duties are to do what needs to be done. — TiredThinker

Okay. I will endeavour to abide by unspecified expectations and do whatever needs to be done." Is that the agreement you sign when you accept a new job?

I don't sign anything. Lol.

I should have guessed. However, ordinary people, when they accept a job, have defined duties and responsibilities, usually a comprehensive job description and some idea of company policy regarding what employees are permitted, expected and empowered to do.