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