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