In the rich text editor:
@riri
In a comment:
[riri](https://chowlings.com/user/riri)
For Names and Avatars:
In the rich text editor:
%riri
In a comment:
[![riri's Avatar](https://chowlings.com/images/avatars/1415.png?v=1700077617)](https://chowlings.com/user/riri) [riri](https://chowlings.com/user/riri)