41.   But maybe a rating system is not so bad.

42.   But in any case, the rating system is strictly voluntary and carries no force of law.

43.   But one retail clerk in the San Francisco store conceded that he did not really understand the rating system.

44.   But Renner acknowledges that this kind of rating system would have limited results, since it could cover only a small portion of the system.

45.   But that must be done through voluntary labeling and a rigorously enforced rating system.

46.   But the furor two years ago over video-game mayhem subsided after a rating system was set.

47.   But the government is counting on the rating system to encourage manufacturers to compete with one another to do better.

48.   But the hearing also illustrated how difficult it will be to construct any useful rating system.

49.   But so far, the only major group to use PICS has essentially adapted to the Web a rating system designed for video games.

50.   But the major broadcast networks for weeks balked at most of the additional codes, just as they once objected to the original rating system.