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