The extent of legal jurisdiction

Question:

How far off a planet's surface does its legal jurisdiction extend?
100 diameters?  The whole system?  Does the Imperium have guidelines
on this, or is it a question of what the world is capable of enforcing?

For example, if a particular world outlawed gambling, could an
enterprising individual get away with setting up a casino in orbit?
Or perhaps elsewhere in the system?

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: Alan Huscroft              : Janet:    [email removed]                   :
: Reading, England           : Internet: [email removed]                   :
: 6-G takeoffs AND landings! : X-boat:   [email removed].solomani_rim :
:............................:.............................................:

"Have you hugged your luugiir today?"