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The taskbar is available from anywhere
One of the most persistent criticisms of Windows 8 is that it uses two different program switching mechanisms. The taskbar is for switching between desktop programs, just as in Windows 7, but switching between Windows Store apps requires the use of a row of program icons on the left side of the screen, exposed by pointing to the upper left corner. Windows 8.1 Update 1 makes that arcane gesture unnecessary by making the taskbar available from any location, including the Start screen and Windows Store apps. Normally, the taskbar is hidden. Moving the mouse pointer to the bottom of screen pops up the taskbar, allowing you to switch to any app with a single click.
A title bar for Windows Store apps
When you're using a mouse with Windows 8, the gestures to close or minimize a Windows Store app aren't obvious. Windows 8.1 Update 1 changes their behavior slightly by adding a title bar with Minimize and Close buttons, along with an icon at the left that reveals window-arranging options when clicked. The new title bar appears briefly when a Windows Store app opens for the first time, and it reappears when you move the mouse pointer to the top of the screen.
Taskbar options when multiple apps are open
The newly unified taskbar is available even when two or more Windows Store apps are arranged on the screen. Here, the Reader app is displaying a PDF document on the left, with a web page open in the "immersive" Internet Explorer 11 on the right. Moving the mouse pointer to the bottom of the screen makes this taskbar visible, and clicking any icon opens that program, giving you the option of where to position it on the screen.