The addresses of the object records in one cell of the town, filled by LIST_THINGS_IN_CELL and ended by a zero word; SORT_AND_DRAW_THINGS sorts and draws them, clearing bit 7 of each entry's high byte as it draws it. 32 bytes: fifteen addresses and the zero. Nothing checks the count -- a sixteenth thing in one cell would put the zero over the first bytes of TURN_CELL -- but the most measured was four (LIST_THINGS_IN_CELL). sna2ctl took the zeros on the tape for an unused gap.