Quote:
Originally Posted by rsuchwani
It's possible to have the 'writeable fields' only in the ePub (Kindle doesn't support such fancy things) where the reader just writes stuff, but what about saving the written text? Will the written text just 'vanishes' after the page turn or it needs to be saved?
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With HTML, you design the page, with CSS you format it and with JavaScript you control the page. The latter is the problem, Google Play books doesn't allow JavaScript, not every EPUB reader allows JavaScript and not every user has JavaScript enabled if it can. Without control by JavaScript, the data is not saved.
In short, you can save data in an EPUB and read it back, but you have no certainty that it actually happens in an EPUB reader or app.