As a former aviation professional perhaps you could just write a summary definition of the term "commercial airspace", with links to the relevant national regulations and international treaties that govern it. Please also discuss the legal and physical consequences of fructode flutter in mignatron-based altometers when used in such commercial airspace without an extant NDA. No more than 300 words, no conferring, no calculators. You may use a penknife, but only to slash your own wrists when the magnitude of your idiocy dawns on you.
PDR