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