Index: tests/test_demo.py
===================================================================
diff -u -r273a45daf0a9fd45d363d0b5ce16691c874a5eec -r84a2eda208d7b18754a8fc101fdb8fd6ab8f4150
--- tests/test_demo.py	(.../test_demo.py)	(revision 273a45daf0a9fd45d363d0b5ce16691c874a5eec)
+++ tests/test_demo.py	(.../test_demo.py)	(revision 84a2eda208d7b18754a8fc101fdb8fd6ab8f4150)
@@ -24,7 +24,8 @@
 def test_dg_version():
     """
     Prints the DG version.
-    \returns None
+
+    @return: None
     """
     dg = DG()
     if dg.cmd_log_in_to_dg():
@@ -36,7 +37,8 @@
 def test_hd_version():
     """
     Prints the HD version.
-    \returns None
+
+    @return: None
     """
     hd = HD()
 
@@ -49,7 +51,8 @@
 def test_hd_off_button():
     """
     Simulates pressing the off button
-    \returns None
+
+    @return: None
     """
     hd = HD()
 
@@ -60,25 +63,11 @@
         # simulate off button pressed
         hd.buttons.cmd_off_button_override(BUTTON_PRESSED, NO_RESET)
 
-
-def test_hd_stop_button():
-    """
-    Simulates pressing the stop button
-    \returns None
-    """
-    raise NotImplementedError
-    """
-    hd = HD()
-
-    if hd.cmd_log_in_to_hd():
-        hd.buttons.cmd_stop_button_override()
-    """
-
-
 def test_hd_blood_flow(ml_per_min=110):
     """
     Sets the HD blood flow rate (mL / min)
-    \returns None
+
+    @return: None
     """
     hd = HD()
     if hd.cmd_log_in_to_hd():
@@ -92,7 +81,8 @@
 def test_stop_hd_blood_flow():
     """
     Stops the HD blood flow
-    \returns None
+
+    @return: None
     """
     hd = HD()
     if hd.cmd_log_in_to_hd():