Here's a little description of the right forearm pickup, right forearm takeaway for the swinger.
With a light constant pressure that is extensor action, and the right forearm in-line and on plane, the right palm should seek to rotate and lift flat to the plane immediately, the right arm bends as it fans immediately lifting and rotating the hands and clubhead up the plane with extensor. This action cocks the left wrist into the backstroke, all the while the pivot is simply turning with it from the very start. It all goes together and right from the start, straight up and rotational