In the rich text editor:
@4DCube
In a comment:
[4DCube](https://chowlings.com/user/4DCube)
For Names and Avatars:
In the rich text editor:
%4DCube
In a comment:
[![4DCube's Avatar](https://chowlings.com/images/avatars/default.jpg)](https://chowlings.com/user/4DCube) [4DCube](https://chowlings.com/user/4DCube)