It consists of storages, streams, and substreams. The CFB format provides a file-system-like structure within a file for the storage of arbitrary, application-specific streams of data.
In 1997, the detailed structure of the CFB file used for Word documents was modified.
doc extension has been an OLE (object linking and embedding) Compound File Binary file as specified in. Since the release of Word 6.0, in 1993, the structure of a Word document with the. The structure for the DOC format has been documented and kept up-to-date in. The specification released in 2007 is available as Microsoft Office Word 97-2007 Binary File Format Specification. doc as extension.Īlthough the DOC format is proprietary, it has been covered by Microsoft's Open Specification Promise since 2007. For convenience, the term "DOC" will be used here to refer specifically to this variant of the Microsoft Word files with. This format description is for the last of these formats. (a) Word for DOS (b) Word for Windows 1 and 2 and Word 3 and 4 for Mac OS (c) Word 6 and Word 95 for Windows and Word 6 for Mac OS (d) Word 97 and later for Windows and Word 98 and later for Mac OS. doc extension has been used for four distinct file formats: As of late 2020, the documentation for File formats that are supported in Word, from Microsoft, lists "Word 97-2003 Document." Īccording to the Wikipedia entry for Microsoft Word, the. Although it cannot support all functionality of the Word application introduced since Word 2007, the DOC format has continued to be available as an alternative to the DOCX/OOXML format, standardized in ISO/IEC 29500, for saving document files in Word. doc extension and referred to here as DOC, was the default format used for documents in Microsoft Word from Word 97 (released in 1997) through Microsoft Office 2003. The Microsoft Word Binary File format, with the. Microsoft Office Word 97-2003 Binary File Format (.doc).
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