diff -r 41300fa6a67c -r f7bc934e204c src/xmlpatterns/schema/doc/Key_diagram.dot
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/xmlpatterns/schema/doc/Key_diagram.dot	Wed Mar 31 11:06:36 2010 +0300
@@ -0,0 +1,12 @@
+digraph Key {
+  mindist = 2.0
+  1 -> 2 [label="annotation"]
+  1 -> 3 [label="selector"]
+  2 -> 3 [label="selector"]
+  3 -> 4 [label="field"]
+  4 -> 4 [label="field"]
+  1 [shape=circle, style=filled, color=blue]
+  2 [shape=circle, style=filled, color=red]
+  3 [shape=circle, style=filled, color=red]
+  4 [shape=doublecircle, style=filled, color=green]
+}