In the rich text editor:
@Cottagecore_demon
In a comment:
[Cottagecore_demon](https://chowlings.com/user/Cottagecore_demon)
For Names and Avatars:
In the rich text editor:
%Cottagecore_demon
In a comment:
[![Cottagecore_demon's Avatar](https://chowlings.com/images/avatars/default.jpg)](https://chowlings.com/user/Cottagecore_demon) [Cottagecore_demon](https://chowlings.com/user/Cottagecore_demon)