In the rich text editor:
@Sweetstuff
In a comment:
[Sweetstuff](https://chowlings.com/user/Sweetstuff)
For Names and Avatars:
In the rich text editor:
%Sweetstuff
In a comment:
[](https://chowlings.com/user/Sweetstuff) [Sweetstuff](https://chowlings.com/user/Sweetstuff)