In the GraphViz docs, there's the following item under the add_edge section:

decorateP

    if set, draws a line from the edge to the label

I can't find any tests which exercise this attribute, nor do any of the examples use it. In trying it,m it appears to be a no-op, but I could be using it incorrectly:

#!/usr/bin/perl -w
use strict;
use GraphViz;

my $g = GraphViz->new();
#my @decorate; # move the comment to the next line to try it without
my @decorate = (decorateP => 1);

$g->add_node('London');
$g->add_node('Paris', label => 'City of\nlurve');
$g->add_node('New York');

$g->add_edge('London' => 'Paris', @decorate);
$g->add_edge('London' => 'New York', label => 'Far', @decorate);
$g->add_edge('Paris' => 'London', @decorate);
$g->as_png('simple.png');
[download]

Regardless of whether or not I use the decorateP attribute, the pngs appear the same.

The binary is 1.13 (v16) on OS X. Googling has proven fruitless. Am I simply using Graphviz wrong? When building complex graphs, lacking that line from the label to the edge can get confusing (and the graph I linked to is a rather simple one.)

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