The account tab is a one-stop shop to see account balances, margin requirements & utilization, and unrealized P&L.
Balance = account balance.
Equity = Balance +/- Unrealized PL
Net Liquidation = balance +/- Unrealized PL
Future Available Funds = Equity - Initial Margin.
Future Maintenance excess = Equity - Maintenance Margin.
Market Value Long = notional value of the contract (in this case 1000 barrels marked to market at $68.97.
Market Value Short = Currently blank because there are no current short positions, buts the notional value of the contract as well.
Initial Margin = Maintenance Margin * 1.10.
Maintenance Margin = Exchange-listed maintenance margin of the contract.
Unrealized PL = (marked-to-market price of contract ( in this case 68.97) - avg fill price (68.85)) * contract multiplier ($10 in this case). Will be in () if negative.