In the rich text editor:
@BugGutz
In a comment:
[BugGutz](https://chowlings.com/user/BugGutz)
For Names and Avatars:
In the rich text editor:
%BugGutz
In a comment:
[![BugGutz's Avatar](https://chowlings.com/images/avatars/1004.jpeg?v=1644063242)](https://chowlings.com/user/BugGutz) [BugGutz](https://chowlings.com/user/BugGutz)