ALT while dragging an item = Move selected item
ALT+ENTER = View properties for the selected item.
ALT+F4 = Close the active item, or quit the active program.
ALT+SPACEBAR = Opens the shortcut menu for the active window.
ALT+TAB = Switch between open items.
ALT+ESC = Cycle through items in the order they were opened.
ALT, SPACEBAR, X = Maximize window
ALT+SPACEBAR = Display the System menu for the active window.
ALT+Underlined letter in a menu name = Display the corresponding menu.