parameter. This parameter specifies the file where additional WSP Windows Search Protocol properties are stored. The format of the file is a csv consisting of 10 comma separated columns. The first 3 columns are required, the other columns are desirable but not necessary. Property Name A property name e.g. System.ItemUrl. GUID A guid that identifies the propertyset the property belongs to. prop ID A number that together with the GUID uniquely identifies the property. inInverted Index Set to TRUE is the property is indexed. isColumn Set to TRUE if the property is one that can be returned in rows returned from WSP query. type One of Boolean,Buffer,Byte,DateTime,Double,Int32,String,UInt16,UInt32,UInt64 MaxSize maximum size when stored. Vector Property TRUE if this is a multivalue property. Description Description of what the property is used for.