11.   The practice allows baggage handlers to move checked luggage quicker.

12.   The practice allows Chinese hospitals to offer transplants to foreigners, including Americans, who travel from far away.

13.   The practice allows gambling companies to comply with state laws limiting casinos to craft that ply the two riverways.

14.   The practice allows gambling companies to comply with state laws limiting casinos to waterbound craft.

15.   The practice allows them to anonymously halt floor consideration of legislation or presidential appointees.

16.   The practice allows airlines to sell seats on the flights of other airlines, so that partners can expand their reach into different cities.

17.   The practice allows capital gains on the shares to be counted toward profits without disrupting long-term business relationships.

18.   The practice allows federal officials to reduce the visibility of sensitive operations by substituting paid civilians for American troops or career intelligence officers.

19.   The practice allows the senators to anonymously halt floor consideration of legislation or presidential appointees.

20.   The practice has allowed papers to expand their coverage of ever-growing suburbs while holding down costs.