Specify a spatial index for the output feature class, if the output is a shapefile or feature class stored in an ArcSDE geodatabase. For more information, see the Add Spatial Index tool. (In, Optional)
Target Platforms: Windows 98, Windows NT 4.0, Windows Millennium Edition, Windows 2000, Windows XP Home Edition, Windows XP Professional, Windows Server 2003 family, Windows Vista, Windows Server 2008 family