How can I see how price movements in the underlying affect the profit or loss potential of my position?
The dark-blue horizontal line in the middle of the graph shows your break-even point, i.e. where your profit would equal zero. Slide the pointer over the line graph and cross-hairs will appear. Use this feature to pinpoint your exact profits at a given price-level for the underlying. If you click on the chart it will fix the crosshairs and display your profit or loss at that specific underlying price; this will also highlight that number on the bottom of the profit and loss table on the left-hand side of the graph. Click the mouse again to release the crosshairs. To plot points far away from the current price of the underlying use the “Chart Price” field on the lower right hand side of the screen. Type in a specific price and then click the “plot” link that is next to the box.
