what is a unicode code point (U+)?

Question

https://unicode-table.com/en/

the unicode there does not have a U+ in front

https://apps.timwhitlock.info/emoji/tables/unicode

the unicode there does have a U+ in front

https://en.wikipedia.org/wiki/Code_point

I don't understand the Wikipedia explanation.

It seems all that's being done is adding a U+ to a perfectly valid Hex number. Why??

Answer 1

It's a convention to denote that the code point should be interpreted as Unicode.

For example, you might see 2e2e, but without some context, you don't know what it signifies. The U+ provides that context, making it clear that it represents "⸮"