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