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