Sub Articulo 161.0

=================SNIP
#!/bin/sh
#
# Turn a (clean) PS file into a booklet
#
# input on stdin or file in arg
#
# psbook -- reorder the pages
#           see -s option for _very_ large files
# psnup  -- scale and place two pages onto one
# pstops -- reverse the odd pages for duplex printing
#
# outup on stdout
#
psbook $1 | psnup -2 | pstops "2:0,1U(21cm,29.7cm)"
=================SNIP