In the rich text editor:
@Zombiearm12K
In a comment:
[Zombiearm12K](https://chowlings.com/user/Zombiearm12K)
For Names and Avatars:
In the rich text editor:
%Zombiearm12K
In a comment:
[![Zombiearm12K's Avatar](https://chowlings.com/images/avatars/default.jpg)](https://chowlings.com/user/Zombiearm12K) [Zombiearm12K](https://chowlings.com/user/Zombiearm12K)