A horizontal pull set up to bias the upper back and rear delts: wide grip, flared elbows, pulling high. The book's bread-and-butter for that region.
Cues
Hinge to a strong torso angle, wide grip, pull to the lower chest/upper abs with elbows out and high. Squeeze the shoulder blades; don't yank with the low back.
Programming
3 × 6–10. Progress reps even if the last bit of range shortens — common on rows. → Progression §3
How to progress
Feel-based/double progression; standardize the rep then add load.