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