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