In the rich text editor:
@Rekkert
In a comment:
[Rekkert](https://chowlings.com/user/Rekkert)
For Names and Avatars:
In the rich text editor:
%Rekkert
In a comment:
[](https://chowlings.com/user/Rekkert) [Rekkert](https://chowlings.com/user/Rekkert)
