In the rich text editor:
@Baphomette
In a comment:
[Baphomette](https://chowlings.com/user/Baphomette)
For Names and Avatars:
In the rich text editor:
%Baphomette
In a comment:
[![Baphomette's Avatar](https://chowlings.com/images/avatars/default.jpg)](https://chowlings.com/user/Baphomette) [Baphomette](https://chowlings.com/user/Baphomette)