Illustrates how to configure and display World Wind 
Airspace shapes. Airspace shapes are
 extruded 3D volumes defined by geographic coordinates and upper- and lower- altitude boundaries. The interior of
 airspace shapes always conforms to the curvature of the globe, and optionally also conform to the underlying
 terrain.
 
 This shows how to use all 11 types of standard airspace shapes: 
 - Orbit
- Curtain
- Polygon
- PolyArc
- Cake
- CappedCylinder
- PartialCappedCylinder
- SphereAirspace
- TrackAirspace
- Route
- Box