In the rich text editor:
@Skullcatsketch
In a comment:
[Skullcatsketch](https://chowlings.com/user/Skullcatsketch)
For Names and Avatars:
In the rich text editor:
%Skullcatsketch
In a comment:
[![Skullcatsketch's Avatar](https://chowlings.com/images/avatars/1253.jpg?v=1696192592)](https://chowlings.com/user/Skullcatsketch) [Skullcatsketch](https://chowlings.com/user/Skullcatsketch)