Internal Server data

Hi--

Is there any documentation about the data that's captured when using the Internal Server reporting option? I see the XML files on my server, but it would be *tremendously* helpful if I knew what the node or fields are being sent so I can plan to capture it with a custom PHP script.

Also, is this capture method capable of taking users back to the points where they left an e-learning? Maybe knowing how the data is formatted will help me answer this, but if anyone can give me a little nudge I will be very appreciative.

Thank you very much!