(0) that reproduce everywhere on any OS perfectly
(0.5) that supports (everything) any typographical engineers ever wanted past and future
Bitmap formats are out from clause -1, Office file formats disqualify from clause 0, Markdown doesn't satisfy clause 0.5. Otherwise a Word .doc format covers most of clauses 1-4.
Can somebody explain why this isn't the case for HTML? I'm frequently in a situation where a website that mimics printed pages fails to render the same between Firefox and Chrome. I wish to understand the primary culprit here. I thought all of the CSS units are completely defined?
You also can't really embed fonts in a HTML file, you rely on linking instead -- and those can rot. Apparently there has been some work towards it (base64 encoded), but support may vary. And you need to embed the whole font, I don't think you can do character subsets easily.