Recently, Allison Dessomines was hired to run a cash register at the La Grange Save$-$More. She had little experience in running cash registers, but she was able to learn the job in a little over six months. At the time she was hired Save$-$More was unaware of her natural computer programming ability. Indeed, she is a computer programming genius. After she learned the Save$-$More system she began tinkering with it$,$ and developed several software subroutines that substantially improved the operations of her cash register. One subroutine reduced the computation time in the register; another kept a running count of money in the register; a third made