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