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Word Document (DOCX)

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Revision as of 20:58, 13 April 2010 by Hypertex (Talk | contribs) (Container Format)

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DOCX is the file format for Microsoft Office 2007 and later.

DOCX should not be confused with DOC, the format used by earlier versions of Microsoft Office.

Container Format

DOCX is written in an XML format, which consists of a ZIP archive file containing XML and binaries. Content can be analysed without modification by unzipping the file (e.g. in WinZIP) and analysing the contents of the archive.

The file _rels/.rels contains information about the structure of the document. It contains paths to the metadata information as well as the main XML document that contains the content of the document itself.

Metadata information are usually stored in the folder docProps. Two or more XML files are stored inside that folder, app.xml that stores metadata information extracted from the Word application itself and core.xml that stores metadata from the document itself, such as the author name, last time it was printed, etc.

Another folder contains the actual content of the document, in a Word document, or an .docx document the folder's name is word. A XML file called document.xml is the main document, containing most of the content of the document itself.

Relationship to OOXML

For most purposes OOXML may be considered a subset of DOCX (DOCX contains additional features, like OLE serialization).

Documentation on OOXML may provide a guide to analysing a DOCX file.

External Links