> ha nem küldözgetnének .docx meg .xlsx-eket egyre többen,
Microsoft Office Compatibility Pack for Word, Excel, and PowerPoint 2007 File Formats
"By installing the Compatibility Pack in addition to Microsoft Office 2000, Office XP, or Office 2003, you will be able to open, edit, and save files using the file formats new to Word, Excel, and PowerPoint 2007."