Quote:
Originally Posted by igorsk
.tan is the "sidecar" file for Topaz, like .mbp for Mobi/AZW. It seems it keeps bookmarks and other user info.
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Ah.
I also noticed that for these books if you get them via Whispernet, they come with the extension .azw1, while if I download them to my computer from the Amazon website, I get the .tpz extension (same book).