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