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