Index: HemodialysisDevice.py
===================================================================
diff -u -rabd93c1d800178a5ee618b9bba83532b853e3c96 -r5f23b5ca87b6211702df8aa805fa767026862b77
--- HemodialysisDevice.py	(.../HemodialysisDevice.py)	(revision abd93c1d800178a5ee618b9bba83532b853e3c96)
+++ HemodialysisDevice.py	(.../HemodialysisDevice.py)	(revision 5f23b5ca87b6211702df8aa805fa767026862b77)
@@ -47,7 +47,13 @@
         self.__messageID = 0
 
     def login(self):
+        """
+            send login command via serial port
 
+            \returns 0 if logged, 1 if it is not logged
+
+        """
+
         request_id = 8000
         cargo = b'123'
 
@@ -73,7 +79,12 @@
 
 
     def OffButton(self):
+        """
+            sends the Off button command
 
+            \returns 0 if successful, non-zero otherwise
+        """
+
         request_id = 8001
         cargo = b'\x00\x01\x00\x00\x00'