improved superclass entry for classes and definition status of is_class, class
corrected recursive definitions of "method" and "fields"
Beware: some proofs are incomplete (sorry, oops), preliminary comments with DvO:
#!/bin/bash
#
# $Id$
#
# psbooklet - rearrange pages of ps file to be printed as booklet (duplex)
#
psbook "$@" | \
pstops '4:0L@.7(21cm,0cm)+1L@.7(21cm,14.85cm),3R@.7(0cm,14.85cm)+2R@.7(0cm,29.7cm)'