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:
[](https://chowlings.com/user/Kibawings) [Kibawings](https://chowlings.com/user/Kibawings)