Takeaway checkpoints: sole, arm, and width
In the takeaway, checkpoints include the sole of the club pointing up toward one o'clock, the sweet spot (and the middle of the right palm) pointing down, the right arm staying very straight, and a wide takeaway. The speaker offers these as points a golfer can feel and visualize.
Channel: CraigHansonGolf
Watch official source at 5:31Why this context matters
From a breakdown of Rory McIlroy's driver swing; checkpoints shown with a drawn reference line.