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Configuration Options

There are a few options available to you and they affect how the interface displays the information and how you place bets.
Figure 1
Figure 1 shows the selectable graph options. You can choose whether or not to display the current back or lay price, the last traded price and the traded range. Click each button to toggle the option on or off. The traded range graphically displays the range of prices where bets have been matched on  this selection.
To the right of this is the scale option. You can choose to display a scale from 1.01 to 1000 (Tick Scale) or the implied probability (Win % Scale) where odds of 2.0 (50% implied probability of winning) are plotted at the midpoint of the scale.  This scale is weighted towards the display of shorter priced runners. The tick scale price increments are evenly distributed across the width of the chart.  4.5 is the midpoint price of the Tick Scale.
You can choose to display the runners in a variety of options from Betfair order (No sorting) to price order using back, lay or last traded price in ascending or descending order.
The row spacing can be customised to suit your layout preferences.  If you wish to display many runners in a small area you can compress the row height to 22 pixels; if you wish to spread out the runners, to provide a larger clickable betting area for each runner you can increase the row height to a maximum of 50 pixels.  If you plan to align the In-play Trader alongside the One-click screen, use a row height of 36 pixels to match the One-click's row spacing
The next option is the label. You can choose to display the last traded price or the implied probability (Win % label) of each runner.
For example, if the current price is 7.6 it will be shown like this:
Or you can choose to show the implied probability of winning (1 divided by 7.6)