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