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