Gets or sets the root rule of the SrgsDocument class.
Assembly: System.Speech (in System.Speech.dll)
The following example creates a rule named winnerRule, and then creates an SrgsDocument object named document. The example then calls the Add method to add the rule to the document. Finally, the example sets the document's property to winnerRule, thereby making it the root rule for the grammar defined by the SrgsDocument object.