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