MAC - shortcut

fn + "UP" arrow = page up
fn + "Down" arrow = page down
fn + "Right" arrow = move cursor to the end of line
fn + "Left" arrow = move cursor to the start of line

fn + delete = delete word after current cursor position


In windows 7

fn + ctrl + "Left" arrow = Home
fn + ctrl + "Right" arrow = End

ctrl + alt + "UP" arrow = screen turn to  0 angle (restore the default angle)
ctrl + alt + "Down" arrow = screen turn to 180 angle
ctrl + alt + "Left" arrow = screen turn to 270 angle
ctrl + alt + "Right" arrow = screen turn to 90 angle

Ref

http://support.apple.com/kb/HT1343

http://forums.macrumors.com/showthread.php?t=665383