In the rich text editor:
@ThatBetaPerson
In a comment:
[ThatBetaPerson](https://chowlings.com/user/ThatBetaPerson)
For Names and Avatars:
In the rich text editor:
%ThatBetaPerson
In a comment:
[![ThatBetaPerson's Avatar](https://chowlings.com/images/avatars/default.jpg)](https://chowlings.com/user/ThatBetaPerson) [ThatBetaPerson](https://chowlings.com/user/ThatBetaPerson)