When KindleUnpack unpacks a FXL KF8 and repackages it as a FXL EPUB 3, each XHTML document in the spine should have a `meta` element inside its `head` block describing the size of the
viewport, in order for the FXL EPUB to be rendered correctly in compatible EPUB ereaders (iBooks, Google Play Books, Kobo…):
Code:
<meta name="viewport" content="width=575, height=749"/>
Besides, the default EPUB version KindleUnpack repackages FXL KF8 as should always be EPUB 3 IMHO (currently defaults to 2), since such is the version that has a specified FXL variant.
Should I add these as issues at
KindleUnpack's Github repo?