Cutting on the action allows for seamless transitions between shots by continuing actions through different camera shots. The document provides instructions on how to shoot a three-shot sequence of someone walking through a door with a wide shot, extreme close-up, and medium shot, with each shot cutting on the action of the person reaching for the doorknob, turning it, and coming through the door. Readers are then asked to write their own three-shot sequences cutting on the action for getting a drink, scratching their face, and tying a shoe.