1.   Installing quotas would allow fishermen to spread out their work throughout the year.

2.   Many OPEC members have been producing more crude oil than their quotas allow and traders said some may ignore the new quotas, as well.

3.   Quotas allow a certain volume of imports at a low tariff rate, after which higher, often prohibitive, taxes are levied.

4.   Quotas allow a certain volume of imports at a low tariff rate, after which higher, often prohibitive taxes are levied.

5.   Quota trading allows one country to fall short of meeting its cutback target by purchasing quota credits from another that more than meets its target.

6.   These higher prices could tempt some in OPEC to pump more oil than their quotas allow.