In the rich text editor:
@Xen
In a comment:
[Xen](https://chowlings.com/user/Xen)
For Names and Avatars:
In the rich text editor:
%Xen
In a comment:
[![Xen's Avatar](https://chowlings.com/images/avatars/2639.jpg?v=1691640074)](https://chowlings.com/user/Xen) [Xen](https://chowlings.com/user/Xen)