Quickbook: Merge from trunk.

Includes blocks in lists fixes, and some documentation changes.


[SVN r77347]

example/directed_graph.cpp

@@ -0,0 +1,26 @@
+//=======================================================================
+// Copyright 2012
+// Authors: David Doria
+//
+// Distributed under the Boost Software License, Version 1.0. (See
+// accompanying file LICENSE_1_0.txt or copy at
+// http://www.boost.org/LICENSE_1_0.txt)
+//=======================================================================
+
+#include <boost/graph/directed_graph.hpp> // A subclass to provide reasonable arguments to adjacency_list for a typical directed graph
+
+int main(int,char*[])
+{
+  // directed_graph is a subclass of adjacency_list which gives you object oriented access to functions
+  // like add_vertex and add_edge, which makes the code easier to understand. However, it hard codes many
+  // of the template parameters, so it is much less flexible.
+
+  typedef boost::directed_graph<> Graph;
+  Graph g;
+  boost::graph_traits<Graph>::vertex_descriptor v0 = g.add_vertex();
+  boost::graph_traits<Graph>::vertex_descriptor v1 = g.add_vertex();
+
+  g.add_edge(v0, v1);
+
+  return 0;
+}