2.1.1 WordDocument Stream
The WordDocument stream MUST be present in the file and MUST have an FIB at offset 0. It also contains the document text and other information referenced from other parts of the file. The stream has no predefined structure other than the FIB at the beginning.
In the context of Word Binary Files, the delay stream that is referenced in [MS-ODRAW] is the WordDocument stream.
The WordDocument stream MUST NOT be larger than 0x7FFFFFFF bytes.