In the rich text editor:
@Arsonlst
In a comment:
[Arsonlst](https://chowlings.com/user/Arsonlst)
For Names and Avatars:
In the rich text editor:
%Arsonlst
In a comment:
[](https://chowlings.com/user/Arsonlst) [Arsonlst](https://chowlings.com/user/Arsonlst)