It seems to have a lot
of features that I'm just not entirely sure about, and I also think the newer version
of Calibre is missing or has changed
certain things; for instance, I can't find the option to maintain my cover's
image dimensions (unless that's because I'm outputting to mobi instead
of epub), which leads me to my additional question: How do I stop Calibre from constantly resizing my 1600 × 2400
image (what I've read is ideal
size for use through any ebook distribution channel) down to 1333x???? (sorry, not at my computer at present so can't remember the dimensions it shrinks it to).