Plain object with all the info
     adapter     [type: "dundas.view.controls.Adapter]   - The adapter for this drop zone.
     rectInfo    [type: "Object"]                        - Plain object containing info for each drop zone rect
             rect        [type: "dundas.Rect"]           - The rectangle with the dimension to draw the drop zone rect
             targetName  [type: "String"]                - The caption of the drop zone rect