diff --git a/csys/csys.lisp b/csys/csys.lisp
index cbf7b4a..ae0d0d9 100644
--- a/csys/csys.lisp
+++ b/csys/csys.lisp
@@ -8,11 +8,10 @@
                     (:shape :scopes/shape)
                     (:util :scopes/util)
                     (:alx :alexandria))
-  (:export #:environment #:*environment* #:procs
-           #:init
+  (:export #:environment #:*environment* #:actions #:procs #:sensors
            #:send #:send-message
-           #:neuron #:synapse
-           #:make-neuron #:update-neuron 
+           #:neuron #:synapse #:std-proc
+           #:make-neuron #:update-neuron #:create-sensor
            #:handle-action))
 
 (in-package :scopes/csys)
@@ -28,13 +27,6 @@
 
 (defvar *environment* (make-instance 'environment))
 
-(defun init ()
-  (setf (gethash :sensor (actions *environment*)) #'create-sensor)
-  (setf (gethash :default (procs *environment*)) #'std-proc)
-  (let* ((eff-proc (gethash '(:effect :default) (procs *environment*) #'std-proc))
-         (zero (make-neuron nil :proc eff-proc))) 
-    (setf (gethash '(:init :zero) (sensors *environment*)) (list zero))))
-
 ;;;; neurons (= behavior factories) and synapses (connection factories)
 
 (defun neuron (proc &optional state syns (env *environment*))
@@ -89,7 +81,6 @@
 (defun do-log (msg state syns env)
   (util:lgi msg))
 
-
 ;;;; helper / utility funtions
 
 (defun forward (msg syns)
diff --git a/test/test-csys.lisp b/test/test-csys.lisp
index ef9524d..78b4bc1 100644
--- a/test/test-csys.lisp
+++ b/test/test-csys.lisp
@@ -52,16 +52,20 @@
       (sleep 0.1)
       (t:show-result))))
 
-;;;; tests
+;;;; test: initialization
+
+(defun init ()
+  (setf (gethash :sensor (csys:actions csys:*environment*)) #'csys:create-sensor)
+  (let ((zero (csys:make-neuron nil :proc #'eff-proc))) 
+    (setf (gethash '(:init :zero) (csys:sensors csys:*environment*)) (list zero))))
 
 (deftest test-init ()
-  (let ((csys:*environment* (make-instance 'test-env :test-suite t:*test-suite*))
-        rcvr)
-    (setf (gethash '(:effect :default) (csys:procs csys:*environment*)) #'eff-proc)
+  (let ((csys:*environment* (make-instance 'test-env :test-suite t:*test-suite*)))
+    ;(setup-xxx)
     (setup-config)
     (core:setup-services)
     (setf (tc:receiver t:*test-suite*) (core:find-service :test-receiver))
-    (csys:init)
+    (init) ; end of setup
     (csys:send-message '(:csys :sensor :init :zero) '(:std :s1))
     (csys:send-message '(:csys :sensor :init :zero) '(:std :s2))
     (sleep 0.1)