In the rich text editor:
@corvus
In a comment:
[corvus](https://chowlings.com/user/corvus)
For Names and Avatars:
In the rich text editor:
%corvus
In a comment:
[![corvus's Avatar](https://chowlings.com/images/avatars/2031.png?v=1676523644)](https://chowlings.com/user/corvus) [corvus](https://chowlings.com/user/corvus)