This tutorial shows how to add Windows Fax and Scan tile to start screen in windows 8 using mouse
STEPS
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1) Type Windows Fax and Scan
2) Right-click Windows Fax and Scan
3) Click Pin to Start
4) Click on the empty space (to hide the search bar)
5) Scroll to the end
6) The Windows Fax and Scan tile will be available at the end of start screen.
7) Click and drag the tile to any place on start screen