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