In the rich text editor:
@ph0kutt
In a comment:
[ph0kutt](https://chowlings.com/user/ph0kutt)
For Names and Avatars:
In the rich text editor:
%ph0kutt
In a comment:
[![ph0kutt's Avatar](https://chowlings.com/images/avatars/default.jpg)](https://chowlings.com/user/ph0kutt) [ph0kutt](https://chowlings.com/user/ph0kutt)