In the rich text editor:
@PorcelainWolf
In a comment:
[PorcelainWolf](https://chowlings.com/user/PorcelainWolf)
For Names and Avatars:
In the rich text editor:
%PorcelainWolf
In a comment:
[![PorcelainWolf's Avatar](https://chowlings.com/images/avatars/1184.png?v=1644063256)](https://chowlings.com/user/PorcelainWolf) [PorcelainWolf](https://chowlings.com/user/PorcelainWolf)