11.   The design uses radioactive graphite spheres, about the size of tennis balls, instead of fuel rods, and the coolant is liquid helium rather than water.

12.   The design also uses plastic in two spots, sandwiched between thin layers of steel.

13.   The design uses electrical current to create radio waves that heat hydrogen fuel, much the way a microwave oven warms food.

14.   The Lockheed Martin STOVL design uses a shaft-driven lift fan.

15.   The Oracle design can use any type of microprocessor and any operating system software.

16.   To reduce the effort needed to move them, Bord said, the design uses two small metal surfaces to catch and use the wind in positioning the ailerons.

17.   Traditional designs use darker, jewel-tone colors, rich woods and Oriental rugs.

18.   Vector designs use custom hardware to calculate long strings that are useful in a range of applications from bomb design to weather prediction.

19.   Adapting to the Festival Supermall theme, the overall design will use locators and signages with colorful icons to help shoppers find what they need at a glance.

20.   Three-tier designs use multiple servers to divide these layers differently.