1)Why is the light sweet crude oil contract (WTI) called a benchmark?

2) What is the delivery point for the WTI futures contract/

3) What is the size of the futures contract (in barrels)

4) What is the expiration date of any given month's contract?

5) What is the margin for the first nearby crude oil futures contract?

6) Who determines what the margin level might be on a futures contract?

7) What is initial margin? What is maintenance margin?

8) Why might the margin change from time to time?

9) What is mark-to-market? (Its purpose?)

10) Who establishes mark-to-market?