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