In the rich text editor:
@Usaretam
In a comment:
[Usaretam](https://chowlings.com/user/Usaretam)
For Names and Avatars:
In the rich text editor:
%Usaretam
In a comment:
[![Usaretam's Avatar](https://chowlings.com/images/avatars/487.gif?v=1731512287)](https://chowlings.com/user/Usaretam) [Usaretam](https://chowlings.com/user/Usaretam)