diff --git a/example/dots/exampledpQygl.svg b/example/dots/exampledpQygl.svg
new file mode 100644
index 0000000..8e594e7
--- /dev/null
+++ b/example/dots/exampledpQygl.svg
@@ -0,0 +1,58 @@
+
+
+
+
+
diff --git a/example/example.org b/example/example.org
index cd9222b..2746053 100644
--- a/example/example.org
+++ b/example/example.org
@@ -340,6 +340,26 @@ tab
[[file:dots/examplejTo8XT.svg]]
:END:
+ Here's the signed interaction graph of this network:
+
+ #+NAME: simple-bn-sig
+ #+BEGIN_SRC racket :results silent :var simple-bn=munch-table(simple-bn)
+(dotit (build-boolean-signed-interaction-graph (unorg simple-bn)))
+ #+END_SRC
+
+ #+BEGIN_SRC dot :file dots/exampledpQygl.svg :results raw drawer :cmd sfdp :noweb yes
+<>
+ #+END_SRC
+
+ #+RESULTS:
+ :RESULTS:
+ [[file:dots/exampledpQygl.svg]]
+ :END:
+
+ For the interaction a \to b, note indeed that when c is #f, b is
+ always #f (positive interaction). On the other hand, when c is #t,
+ b becomes (not a) (negative interaction). Therefore, the influence
+ of a on b is neither activating nor inhibiting.
* Local Variables :noexport:
# Local Variables: