Where is the best Microsoft Excel Chart Biff format documentation

Question

I am looking for the best documentation for Microsoft Excel chart file format - 1997 → 2003.

I am not looking for ooxml. I am not looking for a worksheet / book format. I am looking for Excel chart format .

What is the best resource on the web?

Answer 1

Microsoft published these about a year ago in the details of PA I NFUL . Are you sure you do not want to use XML formats ?; -)

Answer 2

Microsoft has also published these , and the one you want is [MS-OGRAPH] .pdf