fixed has_internal;
added is_internal;
renamed imp_cong' to imp_cong_rule;
uniform versions of forall_conv, concl_conv, prems_conv, conjunction_conv;
#!/usr/bin/env 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)'