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