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