Hi - First of all I'd like to say that Kovid - and all the developers are my heroes - Calibre is an excellent piece of software already, and just gets better with each update. Good job guys (and girls?).
I'll admit now that I haven't read through all the posts regarding epub format - although I have read through all the topics that seemed relevant.
My question relates to the files created by calibre when adding metadata and a cover to the epub book. Calibre creates and stores two extra files - "cover.jpg" and "metadata.opf" and stores these in the folder with the epub file.
Since the epub file is really just a renamed zip file, is it not possible to simply add these two extra files into the epub - then the book, with cover and metadata are less likely to become separated?
I have tried doing this manually, and it seems to work okay - is there some reason why they need to be separate files?