In the rich text editor:
@Willow
In a comment:
[Willow](https://chowlings.com/user/Willow)
For Names and Avatars:
In the rich text editor:
%Willow
In a comment:
[![Willow's Avatar](https://chowlings.com/images/avatars/3347.png?v=1722028403)](https://chowlings.com/user/Willow) [Willow](https://chowlings.com/user/Willow)