If non-negative, the values of this property indicate the relative order in which this McGraphObj will be drawn or enumerated by For Each loops
Selected objects are sorted by ascending DrawingOrder for the McGraphOverlay.SelectedGraphObj Index argument.
Template objects (objects of with the mcgcTemplate Category bit set, mcgcTemplateStat and mcgcTemplateUser) and objects of Category mcgcLabel (McGraphObjText label objects) have a DrawingOrder of -1 and are always drawn immediately after their associated mcgcMaster object.