Quote:
Originally Posted by kovidgoyal
calibre custom column metadata is stored in XMP metadata in the PDF. Try the following experiment.
Save the PDF to disk using the calibre save to disk button. Then re-import it, and you will see that it has all custom column values.
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Yup, I could even see the xml generated from the XMP too, which is great. However, it would be nice to have access to the native pdf property so we could use adobe to look at them or just store some stuff up.
Adobe doesn't allow you to modify/view the XMP, only the custom property...