I used to be able to scroll down a big spreadsheet - fast or slow - as I
controlled the speed by moving the scroll bar tab button. The spreadsheet
would move on the screen as I moved the tab (at the same speed). Now
something has happened and when I scroll, the spreadsheet does not move as I
move the scroll tab. Rather, when I take my finger off the mouse button, the
spreadsheet goes all the way to that point at once. I want to change it back
but no one I've talked to knows how.