In the rich text editor:
@Antonioybf
In a comment:
[Antonioybf](https://chowlings.com/user/Antonioybf)
For Names and Avatars:
In the rich text editor:
%Antonioybf
In a comment:
[](https://chowlings.com/user/Antonioybf) [Antonioybf](https://chowlings.com/user/Antonioybf)