In the rich text editor:
@kocinen
In a comment:
[kocinen](https://chowlings.com/user/kocinen)
For Names and Avatars:
In the rich text editor:
%kocinen
In a comment:
[![kocinen's Avatar](https://chowlings.com/images/avatars/1716.png?v=1675047005)](https://chowlings.com/user/kocinen) [kocinen](https://chowlings.com/user/kocinen)