In the rich text editor:
@Evayhc
In a comment:
[Evayhc](https://chowlings.com/user/Evayhc)
For Names and Avatars:
In the rich text editor:
%Evayhc
In a comment:
[![Evayhc's Avatar](https://chowlings.com/images/avatars/default.jpg)](https://chowlings.com/user/Evayhc) [Evayhc](https://chowlings.com/user/Evayhc)