--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/code/graph/sample.dot	Tue Jun 29 11:44:40 2010 +0900
@@ -0,0 +1,23 @@
+digraph G {
+        d2ttikzedgelabels = true;
+        d2tstyleonly = true;
+        d2tdocpreamble = "\usetikzlibrary{automata}";
+        d2tfigpreamble = "\tikzstyle{every state}=\
+        [draw=blue!50,shape=circle, very thick,fill=blue!20]";
+        edge [lblstyle="fill=blue!20", style="arrows=->", topath="bend left"];
+        node [style="state"];
+
+        a_1 [style="state, initial"]
+        a_1 -> a_2 [texlbl="1"]
+        a_1 -> a_3 [texlbl="2"];
+        a_1 -> a_4 [texlbl="3"];
+
+        a_2 -> a_1 [texlbl="4"];
+        a_2 -> a_3 [texlbl="5"];
+
+        a_3 -> a_1 [texlbl="7"];
+        a_3 -> a_2 [texlbl="8"];
+
+        a_4 -> a_1 [texlbl="10",shape="circle"];
+        a_4 [style="state, accepting"];
+}