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