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