diff --git a/lib/csys/program.ex b/lib/csys/program.ex
index 2bbd803..428c1c9 100644
--- a/lib/csys/program.ex
+++ b/lib/csys/program.ex
@@ -10,26 +10,40 @@ defmodule Scopes.CSys.Program do
 
   def basic_prog() do
     default = &basic_active/2
-    %{default: default,
-      initial: default,
+    stages = %{
+      default: default,
+      initial: &basic_initial/2,
       active: default,
       retired: default
     }
+    transitions = %{
+      restart: :initial,
+      retire: :retired,
+      next:  [initial: :active, active: :retired]
+    }
+    {stages, transitions}
   end
 
-  # processors
+  # basic processors
+  
+  def basic_initial(msg, scope) do
+    basic(msg, scope, {:initial, basic_prog()})
+  end
 
-  def basic_active(msg = {head, _info}, scope) do
+  def basic_active(msg, scope) do
+    basic(msg, scope, {:active, basic_prog()})
+  end
+
+  def basic(msg = {head, _info}, scope, _meta) do
     case head do
       [:csys, :create, :pred | _rest] -> create_pred(scope)
       [:csys, :create, :succ | _rest] -> create_succ(scope)
-      #[:csys, :next | _rest] -> CSys.update_neuron({state, &basic_active/2, syns, env})
-      #[:csys, :next | _rest] -> next(:active, scope)
+      #[:csys, :next | _rest] -> next(scope, meta)
       _ -> forward(msg, scope) || notify(msg, scope)
     end
   end
 
-  def basic_active(msg, scope) do
+  def basic(msg, scope, _meta) do
     forward(msg, scope) || notify(msg, scope)
   end
 
diff --git a/test/csys_test.exs b/test/csys_test.exs
index e20c9bc..527e994 100644
--- a/test/csys_test.exs
+++ b/test/csys_test.exs
@@ -19,7 +19,8 @@ defmodule Scopes.CSysTest do
 
   describe "basic:" do
     test "minimal-neural-net" do
-      zero = Environ.setup(Program.basic_prog()[:initial])
+      {stages, _trans} = Program.basic_prog()
+      zero = Environ.setup(stages[:initial])
       #Actor.send(zero, "Hello Zero!")
       CSys.send_value(zero, "Hello Zero!")
       assert "Hello Zero!" = receive_data().value