Brady Duga

Can a conforming RS reject EPUBs that reference external entities?

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In the [RS spec](https://www.w3.org/TR/epub-rs-33/#confreq-rs-xml-extid) we say: ``` In addition, when processing XML documents, a reading system MUST NOT resolve [external identifiers](https://www.w3.org/TR/xml/#NT-ExternalID) in DOCTYPE, ENTITY and NOTATION declarations [[xml](https://www.w3.org/TR/epub-rs-33/#bib-xml)]. ``` However,...

https://github.com/w3c/epubcheck/blob/55aad60015ac644a04f7e2648d9969f80d5922b6/src/main/java/com/adobe/epubcheck/overlay/ClipTime.java#L19 This is calling new Double(...) on a double and assigning it to a Double, which should no longer be necessary (auto unboxing will handle the conversion). This can now...

In section 3.4 "Exempt resources" we have the following bullet point for a blanket exemption: "it is not embedded directly in EPUB content documents (e.g., via [html] embedded content and...