Jon Noring wrote:
1) Some Works comprise multiple volumes, such as Burton's "The Book of the Thousand Nights and a Night", which comprises 10, 16 or 17 volumes, depending on the edition and what one defines to be the "Work". So that has to be considered with respect to book/volume/ work identifiers, and depends upon what the processing system (such as DP) assigns IDs.
Page images should record the appearance of a physical book. We will never merge more than one book into one djvu file nor split one book across multiple djvu files. If you have 16 physical volumes, you will have 16 djvu files.
2) Some page numbers are implied, but not specifically printed with the page number. For example, in the "My Antonia" project, the last page in most every chapter was kept unnumbered, although each has an obvious logical page number based on page number sequencing -- the publisher simply chose not to print the page number on these pages.
It seems to me the filenaming system has to include implied publisher page numbering.
If you had read the RFC you would have noticed a paragraph that says: ------- The <page number> is the true page number as seen on the physical page (or inferred from the previous / next pages) expressed in arabic numerals and left-padded with zeroes to a length of 4 digits. -------- -- Marcello Perathoner webmaster@gutenberg.org