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