In the rich text editor:
@Squimpz
In a comment:
[Squimpz](https://chowlings.com/user/Squimpz)
For Names and Avatars:
In the rich text editor:
%Squimpz
In a comment:
[![Squimpz's Avatar](https://chowlings.com/images/avatars/174.png?v=1644063264)](https://chowlings.com/user/Squimpz) [Squimpz](https://chowlings.com/user/Squimpz)