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