In the rich text editor:
@St4r-Bytes
In a comment:
[St4r-Bytes](https://chowlings.com/user/St4r-Bytes)
For Names and Avatars:
In the rich text editor:
%St4r-Bytes
In a comment:
[![St4r-Bytes's Avatar](https://chowlings.com/images/avatars/default.jpg)](https://chowlings.com/user/St4r-Bytes) [St4r-Bytes](https://chowlings.com/user/St4r-Bytes)