Support not putting the cover in a signature

[rossburton]

Maybe I'm just being a little slow (quite likely), but if I have a PDF that includes the front and back cover it seems like there needs to be a way of saying "don't put the first two and last two pages into a signature" so I get a bundle of signatures for the content, and a separate double sided sheet for the cover.

As I said, maybe there's a button for that, or I'm just thinking about how to bind the signatures incorrectly, I'm new to this!

[momijizukamori]

So I think basically all the original users of this app were people who were doing the typesetting themselves, so they'd just not include back/front covers. Obviously if you're binding a file you didn't create that's less possible, and I know doing even simple edits to PDFs can be annoying. I think it wouldn't be too much work to add a way to specify pages, maybe similar to a typical printer dialogue?

I'll talk it over with the other devs!