Microsoft introduced the DOCX format, which ends with the extension .docx, in 2007 as an upgrade to its popular word-processing program, Word. DOCX files' incompatibility with earlier versions of Word ...

If you work on a Mac OS X computer in your office and receive DOCX documents created by Microsoft Office on a Windows computer, you can use Pages to open the documents. Pages '09 works with DOCX ...

With the introduction of Office 2007, Microsoft abandoned the age-old .doc format in favor of the newer .docx (also known as the Office Open XML format). If you’re still using Word 2003 or an earlier ...