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