In the rich text editor:
@bellamare
In a comment:
[bellamare](https://chowlings.com/user/bellamare)
For Names and Avatars:
In the rich text editor:
%bellamare
In a comment:
[![bellamare's Avatar](https://chowlings.com/images/avatars/966.jpeg?v=1674049048)](https://chowlings.com/user/bellamare) [bellamare](https://chowlings.com/user/bellamare)