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