diff --git a/runtime/tutor/tutor b/runtime/tutor/tutor
index ed3d076..fdfd09c 100644
--- a/runtime/tutor/tutor
+++ b/runtime/tutor/tutor
@@ -319,7 +319,7 @@
 --->  6)  Sugar is sweet
 --->  7)  And so are you.
 
-Doubling to operate on a line also works for operators mentioned below
+Doubling to operate on a line also works for operators mentioned below.
 
 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 			 Lesson 2.7: THE UNDO COMMAND
@@ -433,7 +433,7 @@
 ---> This line has a few words that need changing using the change operator.
 
 Notice that  ce  deletes the word and places you in Insert mode.
-             cc  does the same for the whole line
+             cc  does the same for the whole line.
 
 
 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
@@ -804,7 +804,7 @@
       b)
 
   NOTE: You can also use  y  as an operator:  yw  yanks one word,
-        yy  yanks the whole line, then  p  puts that line
+        yy  yanks the whole line, then  p  puts that line.
 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 			    Lesson 6.5: SET OPTION
 
diff --git a/runtime/tutor/tutor.utf-8 b/runtime/tutor/tutor.utf-8
index ed3d076..fdfd09c 100644
--- a/runtime/tutor/tutor.utf-8
+++ b/runtime/tutor/tutor.utf-8
@@ -319,7 +319,7 @@
 --->  6)  Sugar is sweet
 --->  7)  And so are you.
 
-Doubling to operate on a line also works for operators mentioned below
+Doubling to operate on a line also works for operators mentioned below.
 
 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 			 Lesson 2.7: THE UNDO COMMAND
@@ -433,7 +433,7 @@
 ---> This line has a few words that need changing using the change operator.
 
 Notice that  ce  deletes the word and places you in Insert mode.
-             cc  does the same for the whole line
+             cc  does the same for the whole line.
 
 
 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
@@ -804,7 +804,7 @@
       b)
 
   NOTE: You can also use  y  as an operator:  yw  yanks one word,
-        yy  yanks the whole line, then  p  puts that line
+        yy  yanks the whole line, then  p  puts that line.
 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 			    Lesson 6.5: SET OPTION