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