diff -r e1725bb7e821 -r 73fdafd843d9 adaptors.dox
--- a/adaptors.dox	Sun Feb 21 18:34:28 2010 +0100
+++ b/adaptors.dox	Sun Feb 21 19:02:08 2010 +0100
@@ -31,7 +31,6 @@
 operations that should be performed on the altered graph.
 In such cases, the LEMON \e graph \e adaptor \e classes could be used.
 
-
 [SEC]sec_reverse_digraph[SEC] Reverse Oriented Digraph
 
 Let us suppose that we have an instance \c g of a directed graph type, say
@@ -178,6 +177,11 @@
 Another typical requirement is the use of certain subgraphs of a graph,
 or in other words, hiding nodes and/or arcs from a graph.
 LEMON provides several convenient adaptors for these purposes.
+In the following picture, a \ref SubDigraph adaptor is applied to an
+underlying digraph structure to obtain a suitable subgraph.
+
+\image html adaptors1.png
+\image latex adaptors1.eps "SubDigraph adaptor" width=\textwidth
 
 \ref FilterArcs can be used when some arcs have to be hidden from a digraph.
 A \e filter \e map has to be given to the constructor, which assign \c bool
@@ -325,6 +329,14 @@
   Orienter<ListGraph> directed_graph(graph, dir_map);
 \endcode
 
+Sine the adaptor classes conform to the \ref graph_concepts "graph concepts",
+we can even apply an adaptor to another one.
+The following image illustrates a situation when a \ref SubDigraph and an
+\ref Undirector adaptor is applied on a digraph.
+
+\image html adaptors2.png
+\image latex adaptors2.eps "Arc disjoint paths" width=\textwidth
+
 LEMON also provides some more complex adaptors, for
 instance, \ref SplitNodes, which can be used for splitting each node of a
 directed graph into an in-node and an out-node.