.doc is a filename extension used for word processing documents stored on Microsoft's proprietary Microsoft Word Binary File Format; it was the primary format for Microsoft Word until the 2007 version replaced it with Office Open XML .docx files.... Wikipedia
Container for: Text, Image,Table
Extended from: Compound File Binary Format (since 97)
Extended to: Microsoft Office XML formats, Office Open XML
Filename extension: doc
Latest release: 10.2; 15 November 2022; 17 months ago