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