Scroll wheel uses

If your finger is tired of turning the wheel in the middle of your computer mouse to roll through a page,press down on the scroll-wheel button.
Arrows appear and you scroll just by moving the mouse up and down.
Click the scroll wheel again to return to normal scrolling.The trick works on many web browsers and in long documents in some versions of Microsoft Word.
Firefox users have another shortcut with the scroll wheel button;Click on a link to open that link in a new browser tab.