Methods for optional content group management:

	CreateContentGroup	This method creates an optional content group in a PDF document.
	GetContentGroupState	This method retrieves the state of an optional content group.
	SetContentGroupState	This method sets the optional content group state.
	GetContentGroupCount	This method retrieves the number of optional content groups.
	GetContentGroupName	This method retrieves the name of an optional content group.
	SetContentGroupName	This method sets the optional content group name.
	BeginOrder	This method creates and begins an order for optional content groups in a PDF document.
	AddContentGroup	This method adds an optional content group to an order.
	EndOrder	This method ends an order for optional content groups in a PDF document.
	RemoveOrders	This method deletes all orders in a PDF document.