Hamilton will continue to run with an aerodynamic package suited to Monza's low-downforce circuit, which includes a rear wing with a lower angle of attack - approximately 40 degrees compared to Button's conventional rear wing, which is raised at around 70 degrees.

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Alonso would have been powerless to defend because the driver ahead is not allowed to move his rear wing to neutralise an attack.

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Go through Fantasyland and attack the castle in the rear.

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Military sources told CNN one of the main sticking points is that the Yugoslav leadership is concerned Kosovo Liberation Army rebels will attack Serb forces from the rear once the withdrawal begins.

CNN: NATO, Yugoslavs hold marathon talks

The control surfaces, acting independently or together with a variable angle of attack of up to 20 degrees (front) and 40 degrees (rear), move the car's center of aerodynamic balance around to compensate for the forces of pitch, roll, yaw and high-speed lift.

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