Quote:
Originally Posted by HarryT
OK, let's suppose that MathML is adopted as a part of the ePub standard. What will happen with all the ePub devices which don't support it? Is it possible to say "if the device supports MathML, display the equation properly; if not, display this SVG image" or something of the sort?
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Yes, that could be done with "fallbacks", which are already a feature of the current spec (if the reader supports this feature, use this content, if it doesn't, use this other "support-is-required-by-the-spec" content instead).
If MathML is addopted as a required feature of the next standard (say ePUB-2), then some readers will be ePUB-2 compliant, some readers will be only ePUB, some books will only work fine with ePUB-2 (if they include MathML content with no fallback), some will work with ePUB or ePUB-2 (if they don't have MathML, or if they include proper fallback). Current ePUB readers will continue reading ePUB books, future ePUB-2 readers will be able to read both ePUB and ePUB-2 books. In the worst case, it won't be much worse than the current situation with SVG, fonts, etc.