Simplified proof of ord_iso_image_pred using bij_inverse_ss.
Replaced not_well_ord_iso_pred_lemma by much simpler well_ord_iso_subset_lemma.
Simplifed proof of well_ord_iso_unique_lemma using well_ord_iso_subset_lemma.
#! /bin/sh
# xlisten -- start a program in one window and create a listener window
# environment variable $LISTEN specifies the file name
#create the file!
date > $LISTEN
xterm -geo 80x10+0+0 -T Listener -n Listener -e tail -f $LISTEN &
sleep 2
xterm -geo 80x45+0-0 -e teeinput $* &