OptionalcategoryThe primary category axis's properties.
OptionalchartSet first: the type every series is drawn as.
OptionaldataEvery series' data labels.
OptionaldataOptionaldisplayOptionallegendOptionalplotOptionalplotOptionalroundedOptionalstyleThe chart area's fill and border, and the chart's font: every text's.
OptionaltitleThe title's properties, or its text.
OptionalvalueThe primary value axis's properties.
What IChart.update sets; each field as its part's setter takes it.