In the rich text editor:
@c-side
In a comment:
[c-side](https://chowlings.com/user/c-side)
For Names and Avatars:
In the rich text editor:
%c-side
In a comment:
[![c-side's Avatar](https://chowlings.com/images/avatars/714.jpg?v=1699254307)](https://chowlings.com/user/c-side) [c-side](https://chowlings.com/user/c-side)