Why is ubuntu a character?

Question

Look at what this simple code produces:

Does this depends on the OS? (I'm using Linux Mint).

Fiddle

<div>Hola</div>

div:before { content:"\f200"; }

Note: I was using ionic framework when I discovered it, but there is no need to include any library in order to see the character.

Answer 1

This question is already answered on another stackexchange site, AskUbuntu

In short, it's a character because that section of unicode space is free for private use, and the designer of the ubuntu font decided this is something they should do.