Map

This is a way sectors are organized. I'm not exactly sure how it's determined, though I think it's a higher number if they were created later. If you want to go to a nearby energy port, say, and you don't see one on your local map, you can sort by closest sectors under the map menu. This also lets you see all sectors in a given number of turns to your current sector, so it's helpful when scouting for efficient trade routes.

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