Anyway, when a police man (yes man, not officer, officer is a fictional character) reads your rights he will say "Do you understand". Understand is synonymous for "Stand Under" and in legalese terms it means just that. So when used in the context of law, especially in this case, the police man is requesting authority over you. If you say "no" the police man won't re-read them, not unless you actually ask what he means by what he just read.
It's an interesting fact. It's because when we are born as soon as we are registered at birth, we are given fictional characters by the government and are defined as a Person. In legalese terms the word Person is used to describe our fictional character. It's defined in the 3rd version of the Blackslaw book. Bear in mind the United Kingdom is a registered profit making company, so we are it's employees, we pay taxes as employees and follow company policy (everything other than common law). So we are treated as fictional characters and that's why the police request authority.
I'm only just getting my head around all this, but the fact is "Do you understand" is requesting authority not asking if you understood what was said.
Here you go, the UNITED KINGDOM. A registered company

Ps. another interesting one is a Summons. A summons is actually an invitation to come to a business place to discuss what needs discussing. You don't have to go. It's an invitation. And the company is the court. Yes, the court is also a registered profit making business. Everything is. Including political parties. Look on DnB (not drum and bass lol).