title: How does Google Docs store documents (on the backend)?
body: <p>I half imagine there being these great .docs in the sky... but another part of me doubts that my documents are even being stored in anything we'd traditionally call a "file." Does Google have its own document format? I feel like it must. Some branch of some existing format like ODF, maybe? Any idea what it's like, what's special about it (if anything), and/or why it is the way it is?</p>