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