DOCX is the default format for saving document files in Microsoft Word 2007 or in more recent versions of this popular text processing software. The DOCX extension replaced DOC, associated with earlier versions of Word, which continues to be compatible with current ones. In addition to supporting the features previously offered by the DOC format, DOCX delivers an XML-based technology. In other words, DOCX files are more compressed, so they help save space on your hard drive, and they also use a programming standard that allows developers to include them more easily in applications.
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