In the rich text editor:
@liefsong
In a comment:
[liefsong](https://chowlings.com/user/liefsong)
For Names and Avatars:
In the rich text editor:
%liefsong
In a comment:
[![liefsong's Avatar](https://chowlings.com/images/avatars/28.png?v=1644063272)](https://chowlings.com/user/liefsong) [liefsong](https://chowlings.com/user/liefsong)