41.   Downer, a former engineer with nine years experience, now wants to help small companies operate better by developing better uses for industrial space.

42.   Each operates by its own rules, but they are fundamentally different than the major exchanges.

43.   For now, though, the Pioneer drive, especially when operated by the smooth, pretty Apple software, is an exciting invention.

44.   For one thing, most academic medical centers operate by consensus among turf-guarding medical superstars not known for small egos.

45.   Generally, though, the custom business operates by word of mouth.

46.   Globalstar plans to be operating by the end of the decade.

47.   Gracie was the consummate scatterbrain, a perfect nitwit who operated by her own impenetrable illogic.

48.   He had most recently been executive vice president for sales and marketing for the television stations owned and operated by CBS.

49.   He said the company would achieve this by not allowing research and development spending to surpass sales growth and by keeping other operating expenses in line.

50.   HMOs operate by paying doctors a fixed monthly fee per patient, now matter how intensive care may be.