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