Balance:  The value of your account not including unrealized gains or losses on open positions.

Equity:  This represents the current market value of your account.  Equity = Balance + (unrealized profit/loss on open positions).

Used Margin:  The amount that is needed in your account as margin for open positions.  Margin requirements on ICM ActTrader are $25 per lot.   For example, if you have 3 lots of open positions, your Used Margin is 3 x $25 = $75.  Note that margin is not a "charge" and is not deducted from your account in any way. 

Usable Margin:  The amount in your account available as margin for new positions.  Usable Margin = Equity - Used Margin

Net PL:  Total Net Profit/Loss on all your open positions. 

Charts and Indicators:  ActTrader offers extensive charting functions with technical indicators.  Click here for detailed descriptions.