By default, the spy glass will show centered around the current position. You can use Offset to move the spy glass up, down, left or right by any given offset.
This is useful for touch devices because the area under the user's finger obscures the view.
Target Platforms: Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2