Decimal Ratios allow users to create more precise spread definitions when creating synthetic spreads in Autospreader. When using ratios in Autospreader, it can become very difficult, if not impossible, to send an Autospreader order that will generate an order quantity in one of the legs that matches your requirements. - See more at: https://community.tradingtechnologi...ios-in-autospreader.html#sthash.5fXUWaUT.dpuf