Unicode is a standard for character encoding that can represent a wide variety of characters used around the world. Software engineer Paul Butler explains that Unicode allows users to embed 'secret ...

when I have like the funny left quote character, unicode code point of 201C I understand and see from xxd and this site, that the stored hex of that is ...

Unicode contains characters from various languages, including the Latin alphabet, but there are only four characters that have separate types registered in addition to 'uppercase' and 'lowercase'.