Quote:
Originally Posted by roger64
So even if the DOCTYPE is required formally, it is not needed technically if all the code is made out of UTF-16 characters.
I agree with Arios: there seems to be absolutely no compatibility problems arising from this suppression of the DOCTYPE as long as the EPUB 2 contains only UTF-16 characters.
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According to the ePub 2.01 specs, files can be encoded
either as utf-8 or utf-16 files. I.e., there's no need to use utf-16 files just because you want to avoid including a DOCTYPE. Also, by definition, utf-16 files are at least twice the size of utf-8 files and offer no advantages for languages that use the Latin alphabet.