A stockroom at night, receiving. Kraft-paper parcels drop in from above, thud onto two drawn shelves and the floor, squash, and settle to sleep. Grab a parcel and throw it; a plain click stamps it with a red 08 and knocks it down a level. Strays left on the floor are quietly reshelved by an unseen stockkeeper, one at a time. Shifts: receiving, inventory, rush.