The Option Spread Viewer allows you to display option spreads of up to four different contracts or as few as one (i.e. a single naked contract). You must enter the individual contract symbols and a multiplier for each contract (e.g. .AAPL110225C360 with a multiplier of -1 means short one AAPL 360 call). There are three display modes: Contract Cost shows the aggregate contract cost for the spread; Spread Value shows the dollar value of the spread; Bar Percent Change shows the percent change in the spread from one chart bar to the next. The user has the option to display an entry price in the Contract Cost mode which will be plotted across the chart for reference.