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