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