A trading screen may include a plurality of next trade quantity regions that comprise a plurality of locations, each location being associated a price on a price axis. The quantities can be entered into the various locations in the next trade quantity regions and the entered quantities can be used as a parameter of a future trade order at the associated price level. The trading screen may also include a plurality of quantity entry regions that are displayed with respect to the price axis. The quantity entry columns may each include plurality of sub-regions or locations corresponding to different price levels in the price axis. The quantity entry columns may be used to specify next traded quantities that may be used in placing orders for tradeable objects.