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