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