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