In the rich text editor:
@tailsete
In a comment:
[tailsete](https://chowlings.com/user/tailsete)
For Names and Avatars:
In the rich text editor:
%tailsete
In a comment:
[![tailsete's Avatar](https://chowlings.com/images/avatars/default.jpg)](https://chowlings.com/user/tailsete) [tailsete](https://chowlings.com/user/tailsete)