In the rich text editor:
@screwsufix
In a comment:
[screwsufix](https://chowlings.com/user/screwsufix)
For Names and Avatars:
In the rich text editor:
%screwsufix
In a comment:
[![screwsufix's Avatar](https://chowlings.com/images/avatars/1135.png?v=1644063254)](https://chowlings.com/user/screwsufix) [screwsufix](https://chowlings.com/user/screwsufix)