More use-case testing around XREF processing.
More use-case testing around XREF processing.

wastemobile/HTMLBook,oreillymedia/HTMLBook,oreillymedia/HTMLBook,gitenberg-dev/HTMLBook,wastemobile/HTMLBook,mushroomgithub/HTMLBook,macmillanpublishers/HTMLBook,gitenberg-dev/HTMLBook,oreillymedia/HTMLBook,macmillanpublishers/HTMLBook,mushroomgithub/HTMLBook,gitenberg-dev/HTMLBook,macmillanpublishers/HTMLBook,mushroomgithub/HTMLBook