Microsoft Compound File
Microsoft Compound File is a complex container format used by some versions of Microsoft Office, and other Microsoft applications. It has features similar to those of a filesystem format.
It is also known as Compound File Binary File Format (CFBF or CFB), Microsoft Compound Document File Format, OLE Compound Document Format, OLE2 Compound Document Format, etc.
The format was not publicly documented by Microsoft until 2008.
Files begin with signature bytes
D0 CF 11 E0 A1 B1 1A E1.
TODO: Explain the relationship between Compound File format and the format/technology called COM Structured Storage (or OLE Structured Storage).