Patent ID: 8037422

Claim:
A trading interface embodied on a computer readable storage medium for executing on a computer, the trading interface for use in trading of a tradeable object on an electronic exchange, the trading interface comprising: a graphical user interface for displaying, on a display screen, a plurality of locations corresponding to a plurality of prices currently available to buy or sell a tradeable object; a plurality of selection areas organized around a central area of a context menu pop-up interface, the plurality of selection areas comprising a plurality of order quantities to be selected to modify an order quantity for a trade order pending at the electronic exchange for the tradeable object; wherein the plurality of selection areas increase in size as a distance from the central area to each selection area increases, and wherein the size of each selection area is determined such that the plurality of selection areas can be selected in approximately the same time, wherein the context menu pop-up interface is displayed responsive to a selection with a user input device of a location of the plurality of locations that corresponds to a price of a trade order that is pending at the electronic exchange to modify an order quantity of the trade order at the price, wherein placement of the central area on the display screen is based on the selected location, and wherein the order quantity of the trade order is modified to a desired order quantity responsive to a selection of one of the plurality of selection areas of the context menu pop-up interface.