Sectors for beginners

[Xerberous]

Hallo,

One short question regarding the sectors:

The wiki says

Sectors are now administrative units in your empire, with their layout decided by galactic geography and each sector corresponding to a cluster of stars in the galaxy. They are automatically created when an empire colonizes a planet in a previously uncolonized cluster. Each sector can have a governor assigned to it.
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But what do they mean with "cluster of stars"? Can I see which stars belong to one cluster?

Thanks!

 

[Askorti]

In lower right, along with other map filters, there's a button to make sectors visible. Usually it's just a bunch of systems around a colonized planet. But sector AI is right now broken and unusable. Don't bother with it.