[johnmcd]

Hi all,

Is there a list of identifiers that calibre supports/uses? I ran a 'calibredb list -f identifiers' command and here are the ones used in my library:

amazon
asin
doi
fwid
google
hardcover
isbn
isbn-hardcover
isbn-paperback
isbn-trade
isbn13-hardcover
isbn13-paperback
isbn13-trade
mobi-asin
paperback

Are all of these used for fetching metadata from online sources?

Thanks

John