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