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