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