diff -r 4d79daa40e9b -r b37cc0bb12db doc/images/nodeshape_1.eps
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/doc/images/nodeshape_1.eps	Thu Apr 24 20:26:14 2008 +0100
@@ -0,0 +1,57 @@
+%!PS-Adobe-2.0 EPSF-2.0
+%%Title: LEMON GraphToEps figure
+%%Creator: LEMON GraphToEps function
+%%BoundingBox: 0 0 200 200
+%%EndComments
+/lb { setlinewidth setrgbcolor newpath moveto
+      4 2 roll 1 index 1 index curveto stroke } bind def
+/l { setlinewidth setrgbcolor newpath moveto lineto stroke } bind def
+/c { newpath dup 3 index add 2 index moveto 0 360 arc closepath } bind def
+/sq { newpath 2 index 1 index add 2 index 2 index add moveto
+      2 index 1 index sub 2 index 2 index add lineto
+      2 index 1 index sub 2 index 2 index sub lineto
+      2 index 1 index add 2 index 2 index sub lineto
+      closepath pop pop pop} bind def
+/di { newpath 2 index 1 index add 2 index moveto
+      2 index             2 index 2 index add lineto
+      2 index 1 index sub 2 index             lineto
+      2 index             2 index 2 index sub lineto
+      closepath pop pop pop} bind def
+/nc { 0 0 0 setrgbcolor 5 index 5 index 5 index c fill
+     setrgbcolor 1.1 div c fill
+   } bind def
+/nsq { 0 0 0 setrgbcolor 5 index 5 index 5 index sq fill
+     setrgbcolor 1.1 div sq fill
+   } bind def
+/ndi { 0 0 0 setrgbcolor 5 index 5 index 5 index di fill
+     setrgbcolor 1.1 div di fill
+   } bind def
+/arrl 1 def
+/arrw 0.3 def
+/lrl { 2 index mul exch 2 index mul exch rlineto pop} bind def
+/arr { setrgbcolor /y1 exch def /x1 exch def /dy exch def /dx exch def
+       /w exch def /len exch def
+       newpath x1 dy w 2 div mul add y1 dx w 2 div mul sub moveto
+       len w sub arrl sub dx dy lrl
+       arrw dy dx neg lrl
+       dx arrl w add mul dy w 2 div arrw add mul sub
+       dy arrl w add mul dx w 2 div arrw add mul add rlineto
+       dx arrl w add mul neg dy w 2 div arrw add mul sub
+       dy arrl w add mul neg dx w 2 div arrw add mul add rlineto
+       arrw dy dx neg lrl
+       len w sub arrl sub neg dx dy lrl
+       closepath fill } bind def
+/cshow { 2 index 2 index moveto dup stringwidth pop
+         neg 2 div fosi .35 mul neg rmoveto show pop pop} def
+
+gsave
+100 dup scale
+%Edges:
+gsave
+grestore
+%Nodes:
+gsave
+1 1 1 0.2 1 0.2 nsq
+grestore
+grestore
+showpage