Crude oil became the world's most actively traded commodity, and the NYMEX Division light sweet crude oil futures contract becoming the world's most liquid form for crude oil trading, as well as the world's largest-volume futures contract trading on a physical commodity. Additional risk management and trading opportunities are offered through options on the futures contract; calendar spread options; crack spread options on the pricing differential of heating oil futures and crude oil futures and gasoline futures and crude oil futures; and average price options.