Magazine : 
Windows 8 Features Unveiled
4. The start screen:
This is similar to windows phone interface which is always active and living as it provides current updates automatically. The tiles can be grouped together. Between each groups there are speed bumps which scrolling the start screen sticks temporarily and makes it difficult to overrun. The personalization is the specialty of this start screen concept. It can be modified as the user wants. The multitouches, picking up the tile with one finger, pinch zooming and the semantic zoom which means to zoom out far enough and the tiles remain readable by switching icons.
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