In the rich text editor:
@Fuluka
In a comment:
[Fuluka](https://chowlings.com/user/Fuluka)
For Names and Avatars:
In the rich text editor:
%Fuluka
In a comment:
[![Fuluka's Avatar](https://chowlings.com/images/avatars/2630.png?v=1699681624)](https://chowlings.com/user/Fuluka) [Fuluka](https://chowlings.com/user/Fuluka)