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