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