{booklet} is a package that allows one to output signature pages that can be folded into a booklet.
booklet is a package that provides some aids for printing simple booklets or signatures for longer books. Pages of a document processed with the booklet package will be reordered and scaled so that they can be printed as four pages per physical sheet of paper, two pages per side. The resulting sheets will, when folded in half, assemble into a booklet.