In the rich text editor:
@Zima_the_foxxo
In a comment:
[Zima_the_foxxo](https://chowlings.com/user/Zima_the_foxxo)
For Names and Avatars:
In the rich text editor:
%Zima_the_foxxo
In a comment:
[](https://chowlings.com/user/Zima_the_foxxo) [Zima_the_foxxo](https://chowlings.com/user/Zima_the_foxxo)