Microsoft has been and continues to be fully committed to opening its document formats for Word, Excel and PowerPoint. Interoperability is not new to Office, and Open XML is part of a much broader strategy around interoperability for Office. When we look at the past three years of document format related...

The first compatibility pack for Open XML was released in November of 2006. This add-in for Office XP and 2003 (which also works with Office 2000 in some cases) enables users to open, edit and save Open XML files using prior releases of Office. The compatibility pack is designed to ease the pain of introducing...