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