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