SIMULATION :
edit bloc 840 :
play with 715 node

edit bloc 148
add demo 0 715 enter cr

edit bloc 200
add demo reclaim 715 node 840 load cr

save code :
save
run simulator : so

move X on 715 node
start
: "S" (F on keyboard)

and see ....
715
ouput "1"




and see ....
715
ouput "0"



