A 3D environment might officially use XYZ coordinates from a central location, read out most commonly from an inertial locator (a cheap and basic model, such as appears in a couple of CT adventures IIRC).

On Mon, Sep 10, 2018, 8:28 PM Cian Witherspoon <xxxxxx@gmail.com> wrote:
A few extrapolations for Traveller
Dome colonies/ spoke cities: radial/ distance from center, could be either streets or blocks (5th spoke, 8th ring, or local names for them)
Underground, stations: level, hall, maybe general zone?

Maybe we create a few example cities that use various methods for Jeff to include?

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