Office 2007 Filecr [SAFE]

You're looking for a solid guide on Office 2007 file formats!

If you have Office 2003 or earlier, you can install the Microsoft Office Compatibility Pack to open, edit, and save OOXML files. office 2007 filecr

Office 2007 introduced a new file format based on the Office Open XML (OOXML) standard. Here's a comprehensive guide to help you understand the new file formats: You're looking for a solid guide on Office 2007 file formats