What is the meaning of the 3 stars on every page of Harry Potter books?

Answer 1

If you see stars at the bottom of your pages, that means that you don't need to read something or it really isn't that necessary to read so he puts a star on the side of the ended sentence and then you look down at the bottom for something that doesn't need to be included

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Asterisks (**) sometimes are included as footnotes, and then the corresponding amount of asterisks at the bottom of the page contains additional information about that word or phrase that was starred.

Answer 2

This symbol usually means that a large period of time has passed in which nothing important or relevant to the rest of the story has happened.