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