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