In the rich text editor:
@Hews002
In a comment:
[Hews002](https://chowlings.com/user/Hews002)
For Names and Avatars:
In the rich text editor:
%Hews002
In a comment:
[![Hews002's Avatar](https://chowlings.com/images/avatars/default.jpg)](https://chowlings.com/user/Hews002) [Hews002](https://chowlings.com/user/Hews002)