In the rich text editor:
@shibekoinu
In a comment:
[shibekoinu](https://chowlings.com/user/shibekoinu)
For Names and Avatars:
In the rich text editor:
%shibekoinu
In a comment:
[![shibekoinu's Avatar](https://chowlings.com/images/avatars/610.png?v=1644063313)](https://chowlings.com/user/shibekoinu) [shibekoinu](https://chowlings.com/user/shibekoinu)