Scrolls page to the position of last visitIt remembers where you stopped reading or watching (scrolling) page
And scrolls you back whenever you open it again (from bookmark or by clicking a link or directly typing adress)
Read, close, open, read on
Press "Forget this page" in the ribbon to erase scrolling info and stop tracking current page
Ribbon appears in the bottom right corner of screen for few seconds after reloading any page
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Actually interesting why browsers do not offer this kind of help yet