In the rich text editor:
@BlueCheese-Cloud
In a comment:
[BlueCheese-Cloud](https://chowlings.com/user/BlueCheese-Cloud)
For Names and Avatars:
In the rich text editor:
%BlueCheese-Cloud
In a comment:
[![BlueCheese-Cloud's Avatar](https://chowlings.com/images/avatars/540.png?v=1658619340)](https://chowlings.com/user/BlueCheese-Cloud) [BlueCheese-Cloud](https://chowlings.com/user/BlueCheese-Cloud)