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