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