How do I create the NCX file from the nav?
I exported the eBook I'm currently editing from InDesign to ePub 3. It generated the ePub with the nav file and the NCX file for backward compatibility reasons.
My problem is that Sigil updated the nav but didn't update the NCX file while I was editing the ePub, and now the NCX is useless.
How can I create a new NCX file?
Thanks.
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