--- a/qmsk/dmx/control.py	Mon Apr 21 00:20:27 2014 +0300
+++ b/qmsk/dmx/control.py	Thu May 01 23:34:20 2014 +0300
@@ -2,6 +2,10 @@
 import logging; log = logging.getLogger('qmsk.dmx.control')
 import serial
 
+"""
+    Low-level DMX channel output.
+"""
+
 class DMXError (Exception) :
     def __init__ (self, **kwargs) :
         self.kwargs = kwargs