.doc
.DOCX
extension .docx
The extension. It tells Windows what kind of a file it is. For example, a file with the ".doc" extension is a Microsoft Word Document.
the Microsoft word files are called document
* The file extension of a Word document is .doc * The file extension of an Excel speadsheet is .xls
doc for Word 2003 and docx for Word 2007
The file extension for Microsoft Access 2007 is '.accdb'.
A compiled Help File in Windows will have the extension .chp
*.msi is the extension for the Microsoft installer package.
FM file extension FRAMEMAKER. Publishing or page authoring document created with Adobe FrameMaker; uses XMLfor creating the document structure; Framemaker can be used to publish documents for print or the Web; it is only available on Windows and Unix platforms.
A console is saved in a file with an .msc extension.
It doesn't use any part of the file. It gets the extension (the part after the dot) of the file name, and looks that up in the registry to see what program should be used to open, for example, a .doc file.