Window Snapping Options Panel
The Window Snapping Options panel lets you ease and speed up the manual arrangement of windows on your desktop by using various window snapping techniques:
Classic check box - mark it to enable the classic snapping.
Aero Snap check box - mark it to start the emulation of the modern Aero Snap mode presented in Windows 7 on Windows XP/Vista.
Suspend on check box - mark it to activate the ability to temporarily disable the snapping (both classic and Aero) while the specified key combination is pressed. In the related group of controls you can define the combination of modifier keys which you must press and hold to suspend the snapping.