In the rich text editor:
@miokani99
In a comment:
[miokani99](https://chowlings.com/user/miokani99)
For Names and Avatars:
In the rich text editor:
%miokani99
In a comment:
[![miokani99's Avatar](https://chowlings.com/images/avatars/default.jpg)](https://chowlings.com/user/miokani99) [miokani99](https://chowlings.com/user/miokani99)