ReadonlyidUnique in the file, and kept across reads of it: <slide id>:<shape id>
in a presentation, the drawing's id in a document.
ReadonlypositionWhere the chart is: its slide's number in a presentation, from 1; in a document, its own number among the document's charts, from 1.
ReadonlynameThe frame's name, such as Chart 3.
Optional ReadonlydescriptionThe alternative text the author gave the chart, if any.
Optional ReadonlyslideA presentation's slide id, p:sldId/@id.
Optional ReadonlyshapeA presentation's shape id, unique on its slide, p:cNvPr/@id.
Optional ReadonlyhiddenWhether the chart is on a slide hidden from the slide show.
ReadonlysnapshotThe chart, read; null when its part is missing or cannot be read.
One chart of a presentation or a document.