The W3C's EPUB 3 Community Group has published a collection of EPUB 3.0 samples in their
EPUB 3 Samples Project at
http://idpf.github.io/epub3-samples/30/samples.html. The readme to the collection informs: "We want to make sure all samples provided here are conformant, pristine, and employ best practices consistently". When I open the
Moby Dick or
The Wasteland samples from that repository in Sigil, Sigil warns me that
Quote:
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This EPUB has HTML files that are not well formed or are missing a DOCTYPE, html, head, or body elements.
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Since these samples were specifically created to be standard conformant and show best practices, I'm wondering why Sigil thinks these files should be fixed.