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