new file mode 100644

@@ -0,0 +1,52 @@

+BEGIN

+{

+    void object_url(obj_t o)

+    {

+        if (hasAttr(o, "URL"))

+            return;

+        string s;

+        if (hasAttr(o, "label"))

+            s = o.label;

+        else

+            s = o.name;

+        if (match(s, "://[a-zA-Z0-9]") >= 0)

+            o.URL = s;

+        if (match(s, "/[a-zA-Z0-9]") == 0)

+            o.URL = sprintf("file://%s", s);

+    }

+    void graph_label_url(graph_t g)

+    {

+        if (g) {

+            g.label     = sub(g.name, "^cluster ");

+            g.labelloc  = "t";

+            g.labeljust = g.parent == NULL ? "c" : "l";

+            object_url(g);

+            graph_label_url(fstsubg(g));

+            graph_label_url(nxtsubg(g));

+        }

+    }

+}

+END_G {

+    $.fontname  = "Arial";

+    $.color     = "grey";

+    $.fontcolor = "grey";

+    $.shape     = "box";

+    $.style     = "rounded";

+    graph_label_url($G);

+}

+N {

+    $.fontname  = "Arial";

+    $.color     = "black";

+    $.fontcolor = "black";

+    if (hasAttr($, "style") && $.style == "invis") {

+        $.shape = "point";

+        $.style = "invis";

+    } else {

+        $.shape = "box";

+        $.style = "rounded";

+    }

+    object_url($);

+}

+E {

+    object_url($);

+}