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