A full twist on the bar at the frontend. There are several ways to achieve this, see the videos to understand how.
The first is by changing your hand at the platform: During a swing, turn your hand on the bar as you arrive at the platform (try on the ground first!) then let go of one hand, make a full turn on the bar at the frontend and take the bar again.
The second is changing your hand as you turn, similar to a Half Turn without a Force-out.
The third is by letting go with both hands as you turn.
You can find out more about this trick in my books:
Thanks to Benoit, Blair, Jamie, Tim and Jean Francois for providing videos for this page.