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