How do I open the XML ddi codebook file?

I created an extract and downloaded the data, however I cannot get to open the XML ddi codebook file once I download it, it opens from the data extract webpage but that extract will be deleted in a few days. Please help.

Right now, the XML DDI codebook will not display properly outside of the website. We are aware of this issue and hope to fix it in the future. I apologize for any inconvenience that this issue has caused.

Until then, we suggest saving or printing the file as a PDF. This way, you can store a PDF copy of the XML DDI codebook on your computer.