In the rich text editor:
@snubby25
In a comment:
[snubby25](https://chowlings.com/user/snubby25)
For Names and Avatars:
In the rich text editor:
%snubby25
In a comment:
[![snubby25's Avatar](https://chowlings.com/images/avatars/default.jpg)](https://chowlings.com/user/snubby25) [snubby25](https://chowlings.com/user/snubby25)