In the rich text editor:
@fatalmirror
In a comment:
[fatalmirror](https://chowlings.com/user/fatalmirror)
For Names and Avatars:
In the rich text editor:
%fatalmirror
In a comment:
[![fatalmirror's Avatar](https://chowlings.com/images/avatars/3454.png?v=1727736680)](https://chowlings.com/user/fatalmirror) [fatalmirror](https://chowlings.com/user/fatalmirror)