elements are child elements, each as the markup the file had and placed by the modeled child
it followed: after is that child's DrawingML name ('' before the first one), and at, for a
child that repeats (ser, dPt), how many of them came before. Writing them back at those
places puts them where the schema wants them, whatever was edited around them.
A fragment's namespace prefixes are the ones in force in the file: those declared on the
fragment itself, or on the chart space (ChartSpace.unknown's attributes).
What an element holds that the model does not.
Remarks
elementsare child elements, each as the markup the file had and placed by the modeled child it followed:afteris that child's DrawingML name (''before the first one), andat, for a child that repeats (ser,dPt), how many of them came before. Writing them back at those places puts them where the schema wants them, whatever was edited around them.A fragment's namespace prefixes are the ones in force in the file: those declared on the fragment itself, or on the chart space (ChartSpace.unknown's
attributes).