In the rich text editor:
@phish
In a comment:
[phish](https://chowlings.com/user/phish)
For Names and Avatars:
In the rich text editor:
%phish
In a comment:
[![phish's Avatar](https://chowlings.com/images/avatars/622.png?v=1644063315)](https://chowlings.com/user/phish) [phish](https://chowlings.com/user/phish)