What is this character: '*​'?

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Music by Eric Matyas
https://www.soundimage.org
Track title: Digital Sunset Looping

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Chapters
00:00 Question
01:53 Accepted answer (Score 71)
03:24 Answer 2 (Score 27)
04:14 Thank you

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Full question
https://superuser.com/questions/1103086/...

Question links:
[Slack]: https://en.wikipedia.org/wiki/Slack_(sof...)
http://www.fileformat.info/

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Tags
#unicode #specialcharacters

#avk47