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