What's this Windows 10 bullseye icon about?

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Music by Eric Matyas
https://www.soundimage.org
Track title: Flying Over Ancient Lands

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Chapters
00:00 Question
00:39 Accepted answer (Score 32)
01:10 Thank you

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Full question
https://superuser.com/questions/1003154/...

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Tags
#windows10v1511

#avk47