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