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