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