NAME
       nop - pretty-print graph file
SYNOPSIS
       nop [ -p?  ] [ files ]
DESCRIPTION
       nop  reads  a  stream  of  graphs  and  prints  each  in pretty-printed
       (canonical) format on stdout. If no files  are  given,  it  reads  from
       stdin.
OPTIONS
       The following options are supported:
       -p     Produce no output - just check the input for valid DOT.
       -?     Print usage information.
EXIT STATUS
       If  any  errors occurred while processing any input, such as a file not
       found or a file containing  illegal  DOT,  a  non-zero  exit  value  is
       returned. Otherwise, zero is returned.
SEE ALSO
       wc(1),  acyclic(1), gvpr(1), gvcolor(1), ccomps(1), sccmap(1), tred(1),
       libgraph(3)
                                 21 March 2001