diff --git a/lib/tally_sheet.py b/lib/tally_sheet.py
index 52ed279..2994907 100755
--- a/lib/tally_sheet.py
+++ b/lib/tally_sheet.py
@@ -19,7 +19,8 @@
 
 class tally_sheet:
     r"""
-    This class is the implementation of a tally sheet.  The sheet can be viewed as rows and columns.  Each
+    This class is the implementation of a tally sheet.
+    The sheet can be viewed as rows and columns.  Each
     row has a unique key field.
 
     This class provides methods to tally the results (totals, etc.).
@@ -81,8 +82,9 @@
         # The row key field uniquely identifies the row.
         self.__row_key_field_name = row_key_field_name
         # Create a "table" which is an ordered dictionary.
-        # If we're running python 2.7 or later, collections has an OrderedDict we can use.  Otherwise, we'll
-        # try to use the DotDict (a robot library).  If neither of those are available, we fail.
+        # If we're running python 2.7 or later, collections has an OrderedDict
+        # we can use.  Otherwise, we'll try to use the DotDict (a robot library).
+        # If neither of those are available, we fail.
         try:
             self.__table = collections.OrderedDict()
         except AttributeError:
@@ -102,8 +104,8 @@
 
     def set_sum_fields(self, sum_fields):
         r"""
-        Set the sum fields, i.e. create a list of field names which are to be summed and included on the
-        totals line of reports.
+        Set the sum fields, i.e. create a list of field names which are to be
+        summed and included on the totals line of reports.
 
         Description of arguments:
         sum_fields                  A list of field names.
@@ -113,12 +115,14 @@
 
     def set_calc_fields(self, calc_fields):
         r"""
-        Set the calc fields, i.e. create a list of field names within a given row which are to be calculated
+        Set the calc fields, i.e. create a list of field names within a given
+        row which are to be calculated
         for the user.
 
         Description of arguments:
-        calc_fields                 A string expression such as 'total=pass+fail' which shows which field on
-                                    a given row is derived from other fields in the same row.
+        calc_fields             A string expression such as 'total=pass+fail'
+                                which shows which field on a given row is
+                                derived from other fields in the same row.
         """
 
         self.__calc_fields = calc_fields
@@ -128,11 +132,13 @@
         Add a row to the tally sheet.
 
         Description of arguments:
-        row_key                     A unique key value.
-        init_fields_dict            A dictionary of field names/initial values.  The number of fields in this
-                                    dictionary must be the same as what was specified when the tally sheet
-                                    was created.  If no value is passed, the value used to create the tally
-                                    sheet will be used.
+        row_key                 A unique key value.
+        init_fields_dict        A dictionary of field names/initial values.
+                                The number of fields in this dictionary must
+                                be the same as what was specified when the
+                                tally sheet was created. If no value is passed,
+                                the value used to create the tally sheet will
+                                be used.
         """
 
         if row_key in self.__table:
@@ -152,33 +158,40 @@
         Update a field in a row with the specified value.
 
         Description of arguments:
-        row_key                     A unique key value that identifies the row to be updated.
-        field_key                   The key that identifies which field in the row that is to be updated.
-        value                       The value to set into the specified row/field.
+        row_key                 A unique key value that identifies the row to
+                                be updated.
+        field_key               The key that identifies which field in the row
+                                that is to be updated.
+        value                   The value to set into the specified row/field.
         """
 
         self.__table[row_key][field_key] = value
 
     def inc_row_field(self, row_key, field_key):
         r"""
-        Increment the value of the specified field in the specified row.  The value of the field must be
-        numeric.
+        Increment the value of the specified field in the specified row.
+        The value of the field must be numeric.
 
         Description of arguments:
-        row_key                     A unique key value that identifies the row to be updated.
-        field_key                   The key that identifies which field in the row that is to be updated.
+        row_key                 A unique key value that identifies the row to
+                                be updated.
+        field_key               The key that identifies which field in the row
+                                that is to be updated.
         """
 
         self.__table[row_key][field_key] += 1
 
     def dec_row_field(self, row_key, field_key):
         r"""
-        Decrement the value of the specified field in the specified row.  The value of the field must be
+        Decrement the value of the specified field in the specified row.
+        The value of the field must be
         numeric.
 
         Description of arguments:
-        row_key                     A unique key value that identifies the row to be updated.
-        field_key                   The key that identifies which field in the row that is to be updated.
+        row_key                 A unique key value that identifies the row to
+                                be updated.
+        field_key               The key that identifies which field in the row
+                                that is to be updated.
         """
 
         self.__table[row_key][field_key] -= 1