Patent ID: 8060435

Claim:
A method, comprising: displaying, by a processor of a computing device, a first interface that comprises a first variable associated with trading an item, in which the first variable comprises a price of the item; displaying, by the processor, data in a second interface in response to a selection of the first variable at the first interface, in which the second interface comprises: a price field, in which a price displayed in the price field is adjustable; a size field, in which a size displayed in the size field is adjustable, and in which the price and the size are associated with trading the item; a first button, in which the first button, when selected causes a trading command to be submitted; a size up button and a size down button, in which the size up button when selected increases the size displayed in the size field and in which the size down button when selected decreases the size displayed in the size field; a price up button and a price down button, in which the price up button when selected increases the price displayed in the price field and in which the price down button when selected decreases the price displayed in the price field; and one or more numeric buttons; receiving a selection of the first button; and submitting, by the processor, the trading command for execution in response to receiving the selection.