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