361 ;;Quote: most successful portability efforts depend on an ideal system; implementations are either subsets or supersets

361+;;Quote: for portability, the least common multiple approach is better yet more difficult than the greatest common divisor approach

376 ;;Quote: current, computerized systems need finer and broader distinctions about portability (gives examples); many systems are hand-crafted

379 ;;Quote: cameras are portable with self-describing film packages, similar operating characteristics, interchangeable lenses by informal standards