diff --git a/doc/route.md b/doc/route.md
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+
+
+ClientA -> SessionA -> Route -> PubSub -> SessionB -> ClientB
+
+
+ClientA -> Session -> PubSub -> Route -> SessionB -> ClientB
+                        |        |
+                      Trie    Subscriber                 
+
+
+ClientPidA -> ClientPidB
+
+
+ClientPidA -> SessionPidB -> ClientB
+
+
+ClientPidA -> SessionPidA -> SessionPidB -> ClientPidB
+
+