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Open Specifications
Microsoft Office File Formats

The Microsoft Office file formats documentation provides detailed technical specifications for Microsoft Office file formats. The documentation is designed to describe each file format in detail as it is used by these applications to create documents.

The documentation contains:

  • Documentation about Microsoft Office file formats

  • Reference documents

In addition to being available on this Web site, the file formats documentation is also available as a download package in .zip file format:

Note

Note that inter-document links are functional only if all PDF files are located in the same directory. An error message appears if you click a link to a PDF document that is in a different folder (when viewing on your computer) or part of a different download (when viewing online).

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