diff --git a/src/avoider.py b/src/avoider.py
index 0d6d887..d6ac019 100755
--- a/src/avoider.py
+++ b/src/avoider.py
@@ -18,8 +18,8 @@ class Avoider:
     """
     def __init__(self):
         """
-		Function that initializes the subsriber, publisher, and marker features.
-		:param self: The self reference
+		Function that initializes the subscriber, publisher, and marker features.
+		:param self: The self reference.
 		"""
         # Set up a publisher and a subscriber.  We're going to call the subscriber
         # "scan", and filter the ranges similar to what we did in example 2.
diff --git a/src/joint_state_printer.py b/src/joint_state_printer.py
index 1ca190c..81aea37 100755
--- a/src/joint_state_printer.py
+++ b/src/joint_state_printer.py
@@ -24,7 +24,7 @@ class JointStatePublisher():
 	def callback(self, msg):
 		"""
 		Callback function to deal with the incoming JointState messages.
-		:param self: The self reference
+		:param self: The self reference.
 		:param msg: The JointState message.
 		"""
 		# Store th joint messages for later use
@@ -35,7 +35,7 @@ class JointStatePublisher():
 		"""
 		print_states function to deal with the incoming JointState messages.
 		:param self: The self reference.
-		:param joints: A list of joint names
+		:param joints: A list of joint names.
 		"""
 		# Create an empty list that will store the positions of the requested joints
 		joint_positions = []
diff --git a/src/marker.py b/src/marker.py
index 6e5e391..30bd4e2 100755
--- a/src/marker.py
+++ b/src/marker.py
@@ -12,8 +12,8 @@ class Balloon():
 	"""
 	def __init__(self):
 		"""
-		Function that initializes the markers features.
-		:param self: The self reference
+		Function that initializes the marker's features.
+		:param self: The self reference.
 		"""
 		# Set up a publisher.  We're going to publish on a topic called balloon.
 		self.pub = rospy.Publisher('balloon', Marker, queue_size=10)
@@ -61,9 +61,9 @@ class Balloon():
 	def publish_marker(self):
 		"""
 		Function that publishes the sphere marker
-		:param self: The self reference
+		:param self: The self reference.
 
-		:publishes self.marker: Marker message
+		:publishes self.marker: Marker message.
 		"""
 		# publisher the marker
 		self.pub.publish(self.marker)
diff --git a/src/move.py b/src/move.py
index 3edadb7..02b08e3 100755
--- a/src/move.py
+++ b/src/move.py
@@ -12,7 +12,7 @@ class Move:
 	"""
 	def __init__(self):
 		"""
-		Function that initializes the subsriber.
+		Function that initializes the publisher.
 		:param self: The self reference
 		"""
 		# Setup a publisher that will send the velocity commands for the Stretch
diff --git a/src/multipoint_command.py b/src/multipoint_command.py
index e03ed15..61a1035 100755
--- a/src/multipoint_command.py
+++ b/src/multipoint_command.py
@@ -27,7 +27,7 @@ class MultiPointCommand(hm.HelloNode):
     def issue_multipoint_command(self):
         """
     	Function that makes an action call and sends multiple joint trajectory goals.
-        :param self: The self reference
+        :param self: The self reference.
     	"""
       # Set point0 as a JointTrajectoryPoint().
       point0 = JointTrajectoryPoint()
@@ -88,8 +88,8 @@ class MultiPointCommand(hm.HelloNode):
     # and issue the stow command.
     def main(self):
         """
-        Function that initiates the multipoint_command function
-        :param self: The self reference
+        Function that initiates the multipoint_command function.
+        :param self: The self reference.
         """
         # The arguments of the main function of the hm.HelloNode class are the
         # node_name, node topic namespace, and boolean (default value is true).
diff --git a/src/scan_filter.py b/src/scan_filter.py
index ce226f8..172cc8d 100755
--- a/src/scan_filter.py
+++ b/src/scan_filter.py
@@ -9,8 +9,8 @@ from sensor_msgs.msg import LaserScan
 
 class Scanfilter:
 	"""
-	A class that implements a LaserScan filter that removes all of the points
-	that are not infront of the robot
+	A class that implements a LaserScan filter that removes all of the points.
+	that are not infront of the robot.
 	"""
 	def __init__(self):
 		# We're going to assume that the robot is pointing up the x-axis, so that
diff --git a/src/stow_command.py b/src/stow_command.py
index 28fa7cb..3dd30c1 100755
--- a/src/stow_command.py
+++ b/src/stow_command.py
@@ -27,7 +27,7 @@ class StowCommand(hm.HelloNode):
     def issue_stow_command(self):
         '''
     	Function that makes an action call and sends stow postion goal.
-        :param self: The self reference
+        :param self: The self reference.
     	'''
         # Set stow_point as a JointTrajectoryPoint().
         stow_point = JointTrajectoryPoint()
@@ -60,8 +60,8 @@ class StowCommand(hm.HelloNode):
     # and issue the stow command.
     def main(self):
         '''
-        Function that initiates stow_command function
-        :param self: The self reference
+        Function that initiates stow_command function.
+        :param self: The self reference.
         '''
         # The arguments of the main function of the hm.HelloNode class are the
         # node_name, node topic namespace, and boolean (default value is true).