In the rich text editor:
@Starv10
In a comment:
[Starv10](https://chowlings.com/user/Starv10)
For Names and Avatars:
In the rich text editor:
%Starv10
In a comment:
[![Starv10's Avatar](https://chowlings.com/images/avatars/default.jpg)](https://chowlings.com/user/Starv10) [Starv10](https://chowlings.com/user/Starv10)