The extLst fragments of a shape's elements: opaque DrawingML kept as the file states it and written back as it was, the one markup that stays once the shape is otherwise JSON. A line's is on its stroke, a text body's on its body.
extLst
Optional
cNvPr/extLst: the creation id and whatever else extends the non-visual properties.
cNvPr/extLst
spPr/extLst.
spPr/extLst
The
extLstfragments of a shape's elements: opaque DrawingML kept as the file states it and written back as it was, the one markup that stays once the shape is otherwise JSON. A line's is on its stroke, a text body's on its body.