> On physically-constrained devices (e.g., phones < 6" diagonal), it's about the only reader format that works at all. For larger devices, I strongly prefer a f

> On physically-constrained devices (e.g., phones < 6" diagonal), it's about the only reader format that works at all. For larger devices, I strongly prefer a fixed-layout format such as PDF or DJVU. Interesting, I don't think I have a strong preference here. For textbooks I tend to prefer DJVU simply because of filesize, though DJVU readers aren't quite up to snuff in comparison to, say, evince (at least on nix, I'm not sure the state on non-nix). > And I think ePub still doesn't support formulae properly. Well, in theory, the latest versions of ePub have support for MathML. In practice... I don't know. I've tried to consume books with formulae on ePub and it's been a little nightmare. > These are ultimately different domains with different needs and uses. There's some call for complex and mixed formats .... but far less han their promotors would like us to believe. Advertising must die or be killed. There are promoters still? I would have been more sympathetic for mixed formats and flows when the web was younger, but these days, it feels obvious to me at least that the cases do have very different needs. Hell, every time I have to deal with a shadow DOM (which I don't have to do often, luckily) I regret the choices that ended up creating the concept of a shadow DOM in the first place. Is your sub a place to discuss issues like this? I'd love to think/discuss these sorts of things in a thoughtful environment, and thanks for your exchange.