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