Maxime, Thank You for the explanation. I think I understand that mechanism better now. > While it is the version of the file format, it is not the version of > the file, which I believe is were the confusion came from? This is exactly right, that's where my confusion came from. Ludovic: I'll amend my patch to more explicitly document the version field in this way. Hopefully, it will be sent here by the end of the day. Thank You both for Your help! -- Christopher Rodriguez