Quote:
Originally Posted by Nate the great
Does anyone know if there is Epub reading software that uses the guide tags of the OPF file? I'd like to know if I can leave it undeveloped.
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The guide section is in OPF 2.0 for backwards compatibility reasons, I think. From the OPF spec:
Quote:
Originally Posted by OPF 2.0
Reading Systems are not required to use the guide element in any way.
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Because of this, few reading systems will support it. It also (poorly) duplicates the functionality of the NCX, that is, a presentable Table Of Contents. It's pretty much useless.
BTW Sigil doesn't create it and it will strip it from your input epub if it has one.