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