XML refers to Extensible Markup Language, which is a language similar to HTML. If you have an XML document, you may be wondering how to open it. Although you can open an XML file in Notepad, the ...

Yes, a .docx file is really a .zip archive (I told you it was compressed). Most of what you find inside are .xml files–another open standard. That experiment will also work on .xlsx and .pptx files.