In the rich text editor:
@Jelliot21
In a comment:
[Jelliot21](https://www.whistlercrest.com/user/Jelliot21)
For Names and Avatars:
In the rich text editor:
%Jelliot21
In a comment:
[](https://www.whistlercrest.com/user/Jelliot21) [Jelliot21](https://www.whistlercrest.com/user/Jelliot21)