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