/// <summary>
		/// Opens the syntactical rules manager.
		/// </summary>
		/// <param name="sender">
		/// A <see cref="System.Object"/>
		/// </param>
		/// <param name="args">
		/// A <see cref="EventArgs"/>
		/// </param>
		private void OnSyntacticalManagerItemActivate(object sender, 
		                                              EventArgs args)
		{
			SyntacticalRulesManagerDialog dialog = 
				new SyntacticalRulesManagerDialog(this.Window);
			dialog.Show();
			
			dialog.Destroy();
		}