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