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