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