In the rich text editor:
@scerpentes
In a comment:
[scerpentes](https://chowlings.com/user/scerpentes)
For Names and Avatars:
In the rich text editor:
%scerpentes
In a comment:
[![scerpentes's Avatar](https://chowlings.com/images/avatars/1644.jpg?v=1670210144)](https://chowlings.com/user/scerpentes) [scerpentes](https://chowlings.com/user/scerpentes)