1, the key to open the program: You can select the program you want to open, and then click the middle mouse button can quickly open the program window.
2, the middle key can quickly close the window, when the WINDOWS7 system taskbar to open the Aero effect, such as IE and other programs opened a number of tabs/windows, you can see through it to view the thumbnail preview of each window, you will find that when the mouse moved to a thumbnail, A small, closed button is displayed in the upper-right corner, which you can click to close the window or label the page directly.
But this button is a bit small, for small screen users, is not easy to quickly locate, so want to more quickly shut down, you can directly in the thumbnail click on the middle mouse button, so you can directly close, when the thumbnail preview has more than one window or label exists, the middle click can be closed to the specified window or label, If only one window closes the entire program (PS:QQ form of the program, you can only close the Chat window, and can not reach the direct shutdown of the main program).