ReadonlytypeAuto is Scott's normal reference rule; the other two are the author's.
Optional ReadonlywidthThe bin width, for BinWidth.
Optional ReadonlycountHow many bins, overflow and underflow included, for BinCount.
Optional ReadonlyunderflowEvery value at or below it goes in one underflow bin, when set.
Optional ReadonlyoverflowEvery value above it goes in one overflow bin, when set.
A histogram's binning (
Excel.ChartBinOptions), as far as the reading needs it.