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