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