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