[compurandom]

So I keep the #read and #percentread columns separate.

#read is a boolean I manually change, and #percentread is updated by the plugin and reflects the position of the book on the device.

That way, if I've finished the book but want to check something in the middle, my #read status doesn't get changed, even if I want to remember that position in calibre.

I have a search that looks for a couple of manually updated items and finds books that need updating. (Including missing covers, covers created but not on device, wrong ondevice status, missing rating, no tags, etc.)