In the rich text editor:
@radishcake
In a comment:
[radishcake](https://chowlings.com/user/radishcake)
For Names and Avatars:
In the rich text editor:
%radishcake
In a comment:
[](https://chowlings.com/user/radishcake) [radishcake](https://chowlings.com/user/radishcake)
