diff --git a/light8/rsn.py b/light8/rsn.py
--- a/light8/rsn.py
+++ b/light8/rsn.py
@@ -43,6 +43,7 @@ fades = {}
 
 _oldlevels=[None] * 68
 
+# this is called on a loop, and ALSO by the Scales
 def changelevel(*args):
     'Amp trims slider'
     global _oldlevels
@@ -87,8 +88,6 @@ def quit(*args):
 
 xfader=Xfader(scalelevels)
 
-
-
 def buildinterface(*args):
     global channel_levels, _oldlevels, leveldisplay, xfader
     for w in root.winfo_children():
@@ -191,7 +190,3 @@ bindkeys(root,'<Escape>', quit)
 # bindkeys(root,'<s>', make_sub)
 backgroundloop()
 root.mainloop() # Receiver switches main
-
-while 1:
-    for lev in range(0,255,25)+range(255,0,-25):
-        sleep(.2)
diff --git a/light8/stage.py b/light8/stage.py
--- a/light8/stage.py
+++ b/light8/stage.py
@@ -31,6 +31,20 @@ class Stage(Canvas):
     lights should be able to be interactively 'locked', which blocks
     them from being selected. 
 
+    API:
+      __init__(parent,**kw)
+        put pass any canvas options you want
+        
+      setimage(stageimage)
+        sets image to given filename (ppm, gif, etc) and resizes the canvas to the image size
+
+      addlight(name, location, aim=None)
+        location and aim are pixel coord tuples. name will be passed back to you in the callback (see below)
+
+      setlightchangecb(cb)
+        give a function which will be called like this: cb(list_of_light_names, delta)
+      
+
     """
     def __init__(self,parent,**kw):
         Canvas.__init__(self,parent,**kw)
@@ -130,6 +144,7 @@ class Stage(Canvas):
                     self.lmbstate='levelchange'
                     
             else:
+                # clicked a light that wasn't selected
                 if not shifted:
                     self.clearselection()
                 self.select(touching[0])