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Post-it Notes are small pieces of paper with a weak adhesive on the back side. They are re-usable and re-postable. The are used for many things such as reminders, page markers, etc.  

'''Post-it Notes''' are small pieces of paper with a weak adhesive on the back side. They are re-usable and re-postable. The are used for many things such as reminders, page markers, etc.  

Since their inception in the 1980's, a wide variety of Post-it Notes haev been created.

Since their inception in the 1980's, a wide variety of Post-it Notes haev been created.

They were invented by Arthur Fry at 3M.

They were invented by Arthur Fry at 3M.