I want to create a single book that contains English text (e.g. on pages 1-10) and an Arabic translation. Currently, the Arabic text starts on page 11 and ends on page 20, so the reading order is Western.
I want to use the Arabic reading order instead: the Arabic text should start on page 20 and the last Arabic text is placed on page 11.
Normally this is done by setting the 'binding side'. But that is a document-level setting. So I'd have to create a book file, containing one file for English (binding side=left) and one for Arabic (binding side=right). When I do that, what happens to the page numbering? Can I get a book with page numbers 1-20, or will it become 1-10 and then 20 19 18, making page 11 the first Arabic page?