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