In the rich text editor:
@snoutlingfur
In a comment:
[snoutlingfur](https://chowlings.com/user/snoutlingfur)
For Names and Avatars:
In the rich text editor:
%snoutlingfur
In a comment:
[![snoutlingfur's Avatar](https://chowlings.com/images/avatars/1422.jpeg?v=1665405140)](https://chowlings.com/user/snoutlingfur) [snoutlingfur](https://chowlings.com/user/snoutlingfur)