Spread Matrix
A Spread Matrix is a specialized grid that displays all open contracts for a commodity's root symbol. It is designed to show you the "spread" in Last Price between the different expiration dates of the contract. You can add this panel to your workspace by clicking on More in the main toolbar and then selecting Spread Matrix under Calcs.
You can change the root symbol as well as the number of contracts to spread by typing in the root symbol and then the hashtag plus the number of futures contracts as shown in the example below.