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