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