reading symbolic information ...
t	where
j	status
st	stop
s	step
r	run
q	quit
p	print
n	next
l	list
e	edit
h	help
d	delete
c	cont
break(x)	stop at x
[1] stop at 12
[1] stopped in p at line 12
   12   }
break(12)
^ unrecognized command