What does the opacity tool do in Photoshop?

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Tags

1. #photoshop
2. #slider
3. #editors
4. #adobe
5. #setting
6. #graphics
7. #words
8. #provide
9. #opacity
10. #other
11. #lower
12. #adjust
13. #layer
14. #transparent
15. #image
16. #ranges
17. #typically