#	net2dot - convert FBP Net programs into dot graphs
.	Net
<	net_code
>	dot_graph
|	pipes pipes1 docs procs pipe_shaped links head foot
*	class	classs	<net_code  '#' docs>  '.' docs>  '*' procs>  '|' pipes>  '(' pipes>  '<' pipes>  '>' pipes>
*	split	tr	' ' '\n' <pipes >pipes1	
*	null	cat	<docs >/dev/null
*	concat	catb	head< pipe_shaped< links< foot< >dot_graph
*	writeh	cat	"$prog_dir/net2dot_head" >head
*	writef	echo	'}' >foot
*	shape	app_col	'[shape=plaintext];' <pipes1 >pipe_shaped
*	link	toks	<procs | keep_proc_redir >links