|DVIBOOK(1)||General Commands Manual||DVIBOOK(1)|
The -s option selects the size of signature which will be used. The signature size is the number of sides which will be folded and bound together; the number given should be a multiple of four. The default is to use one signature for the whole file. Extra blank sides will be added if the file does not contain a multiple of four pages.
By default, dvibook rearranges the pages into left-hand side binding signatures; the -r option switches to right-hand side binding signatures. This might be useful for pTeX vertical writing (tate-kumi) documents.
Dvibook normally prints the page numbers of the pages rearranged; the -q option suppresses this.
MC-TeX User's Guide