Questions about the old Microsoft Word file format and how to use it.
The "doc" format is a proprietary file format used by Microsoft as their main file format for text documents from the 1980s till 2007. With the release of Word 2007 "docx" is the main file format.
All Questions about the older (pre .docx) Wordfiles should use this tag. Questions about .docx files can use this tag, but should use "docx" primarily. Questions about .odf .txt .rdf should not use this tag.
Wikipedia about "doc" http://en.wikipedia.org/wiki/DOC_%28computing%29
Decrypted file format: http://sc.openoffice.org/compdocfileformat.pdf