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