Win8.1 system hidden skills: window automatically close /add multiple accounts, etc.

The window closes automatically. According to Microsoft, Windows 8.1 can automatically shut down applications that users don't use. In addition, the windows of these applications do not indicate the closed symbol "x", if you want to manually close it, you need to use your finger to hold the window to swipe from top to bottom.
Add multiple accounts. Because Microsoft's Windows 8 system relies heavily on cloud services, each user needs to register their own Microsoft account to get these services. You can add a child's account to monitor your online behavior. Users can register for a new Microsoft account with any email address,
Manage privacy. If you don't want advertisers to track your online behavior, then you can decide how much information Microsoft will share with you.
Zoom the window in traditional desktop mode. If you have a large display or multiple monitors, you can use two fingers to operate the window zoom function in traditional desktop mode.
Swipe left or right on the screen to see all open windows and apps, and the list is displayed on the left side of the screen.
View multiple open windows at the same time. This function "hidden" can be achieved with the mouse in the "Start" button and the "Taskbar" in the desktop mode.
Completely avoid application mode and go directly back to traditional desktop mode. This can be done at boot time.
Show shortcuts on the on-screen keyboard. Microsoft has added some cool features to the on-screen keyboard. Just click the Control button to see a series of traditional shortcuts such as select all, copy, and paste. In addition, the on-screen keyboard recognizes gestures and can be written directly with your fingers.