In the rich text editor:
@Nohh9
In a comment:
[Nohh9](https://chowlings.com/user/Nohh9)
For Names and Avatars:
In the rich text editor:
%Nohh9
In a comment:
[![Nohh9's Avatar](https://chowlings.com/images/avatars/default.jpg)](https://chowlings.com/user/Nohh9) [Nohh9](https://chowlings.com/user/Nohh9)