I store my word docs in my dropbox folder.

I would like the latest changes I make to my open docs to be synced to the cloud.

problem: word's autosave function doesn't seem to update the actual doc file, it rather makes its own, separate file. Thus, dropbox doesn't know that I have edited my doc until I hit the save button or close the doc.

How can I make word do a periodic full save, so that my latest changes will get synced?