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