Except that historically, application/font-sfnt didnt exist and I am sure there are renderers out there that wont recognize it. calibre prefers to produce code that *actually works* on real renderers, unlike epubcheck.
Except that historically, application/ font-sfnt didnt exist and I am
sure there are renderers out there that wont recognize it. calibre
prefers to produce code that *actually works* on real renderers, unlike
epubcheck.