In the rich text editor:
@Staryon
In a comment:
[Staryon](https://chowlings.com/user/Staryon)
For Names and Avatars:
In the rich text editor:
%Staryon
In a comment:
[![Staryon's Avatar](https://chowlings.com/images/avatars/10.png?v=1644063241)](https://chowlings.com/user/Staryon) [Staryon](https://chowlings.com/user/Staryon)