3. Overview Group Object

	Create and Destroy
CBCreate	Creates an Combined-Block Object which can hold one or more drawing objects (Circle, Text, Line, etc.).
CBDestroy	Destroys a grouped object and all containing drawing objects.

	Set
CBAddObjects	Adds UniPlot drawing objects to a grouped object. Do not use LayerAddObjects to add the objects to the page.
CBRemoveAllObjects	Removes all drawing objects from a grouped object. The drawing objects will be destroyed.
CBUpdate	Updates the bounding rectangle of a grouped object.

	Get
CBGetAllObjects	Gets the handles of all containing drawing objects in a grouped object.

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