Here is what I am looking at in TWS: Edit -> Global Configuration -> Presets -> Futures -> All possible fields -> Size and then the "Display Size" field. So lets say I'm trading 10 lots. And I select a display size of 1. Does that make my order a hidden order or an iceberg order? In other words is my 10 lot order simply hidden? Or is it a one lot order that will refresh at the back of the order queue after each partial fill (an iceberg order) until the full 10 lots are filled?