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