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