21.   ----- GPS, or global positioning system, uses a network of satellites orbiting the Earth for navigation.

22.   A new route sprang up to bring illegal aliens up the Gulf coast from Mexico using a network of boats and ferries that connected northern Mexico with Corpus Christi.

23.   A new route sprang up to bring illegal immigrants up the Gulf coast from Mexico using a network of boats and ferries that connected northern Mexico with Corpus Christi.

24.   Aides can use their networks in Washington to enlist political endorsements and financial backers.

25.   Also surveying the cellular landscape are the cable television companies, which are eager to use their networks as an means for linking wireless telephones.

26.   Businesses use the networks for internal communications and to trade information with suppliers and business partners.

27.   But even investors who are not using the networks have reason to be concerned, as volatility jumps and total trading costs increase.

28.   But footnoted in the report is information indicating that Enron used its network of offshore subsidiaries and stock-option deductions to reduce its tax liability to zero.

29.   But in Russia, Pepsi- Cola, which uses a network of state-owned bottlers, still has the edge.

30.   But now there are hundreds of long-distance carriers, and when consumers dial zero, they are using the network of whatever carrier that phone has been assigned to.