diff --git a/pretext/Sort/DiscussionQuestions.ptx b/pretext/Sort/DiscussionQuestions.ptx
index 6b76e862..c73f396b 100755
--- a/pretext/Sort/DiscussionQuestions.ptx
+++ b/pretext/Sort/DiscussionQuestions.ptx
@@ -105,5 +105,8 @@
                     chapter?</p>
             </li>
         </ol></p>
+    <conclusion><p>
+            <!-- extra space before the progress bar -->            
+    </p></conclusion>
     </section>
 
diff --git a/pretext/Sort/Glossary.ptx b/pretext/Sort/Glossary.ptx
index 8a62b624..7976fb22 100755
--- a/pretext/Sort/Glossary.ptx
+++ b/pretext/Sort/Glossary.ptx
@@ -107,5 +107,8 @@
                 </gi>
             
         </glossary>
+    <conclusion><p>
+        <!-- extra space before the progress bar -->            
+    </p></conclusion>
     </section>
     
diff --git a/pretext/Sort/Matching.ptx b/pretext/Sort/Matching.ptx
index caa63063..0bf73399 100644
--- a/pretext/Sort/Matching.ptx
+++ b/pretext/Sort/Matching.ptx
@@ -67,4 +67,7 @@
       </match>
     </cardsort>
   </exercise>
+  <conclusion><p>
+    <!-- extra space before the progress bar -->            
+  </p></conclusion>
 </section>
diff --git a/pretext/Sort/Objectives.ptx b/pretext/Sort/Objectives.ptx
index b088bd52..0ac67c3e 100755
--- a/pretext/Sort/Objectives.ptx
+++ b/pretext/Sort/Objectives.ptx
@@ -6,5 +6,8 @@
                     merge sort, quick sort, insertion sort, and shell sort.</p>
             </li>
         </ul></p>
+    <conclusion><p>
+        <!-- extra space before the progress bar -->            
+    </p></conclusion>
     </section>
 
diff --git a/pretext/Sort/ProgrammingExercises.ptx b/pretext/Sort/ProgrammingExercises.ptx
index e2a6d0da..a9a3dfd2 100755
--- a/pretext/Sort/ProgrammingExercises.ptx
+++ b/pretext/Sort/ProgrammingExercises.ptx
@@ -30,5 +30,8 @@
                     techniques.</p>
             </li>
         </ol></p>
+    <conclusion><p>
+        <!-- extra space before the progress bar -->            
+    </p></conclusion>
     </section>
 
diff --git a/pretext/Sort/SelfCheck.ptx b/pretext/Sort/SelfCheck.ptx
index 653257fb..d5b1748f 100644
--- a/pretext/Sort/SelfCheck.ptx
+++ b/pretext/Sort/SelfCheck.ptx
@@ -55,6 +55,7 @@
             </choice>
         </choices>
     </exercise>
-
-    
+    <conclusion><p>
+        <!-- extra space before the progress bar -->            
+    </p></conclusion>    
 </section>
diff --git a/pretext/Sort/Summary.ptx b/pretext/Sort/Summary.ptx
index 6b0faa33..9f6ce18f 100755
--- a/pretext/Sort/Summary.ptx
+++ b/pretext/Sort/Summary.ptx
@@ -19,5 +19,8 @@
                     list. It does not require additional space.</p>
             </li>
         </ul></p>
+    <conclusion><p>
+        <!-- extra space before the progress bar -->            
+    </p></conclusion>
     </section>
 
diff --git a/pretext/Sort/TheBubbleSort.ptx b/pretext/Sort/TheBubbleSort.ptx
index aa875542..742fe45a 100644
--- a/pretext/Sort/TheBubbleSort.ptx
+++ b/pretext/Sort/TheBubbleSort.ptx
@@ -403,4 +403,7 @@ print(alist)
 
     </exercise>
 </reading-questions> 
+    <conclusion><p>
+        <!-- extra space before the progress bar -->            
+    </p></conclusion>
     </section>
diff --git a/pretext/Sort/TheInsertionSort.ptx b/pretext/Sort/TheInsertionSort.ptx
index 2c36b92e..4042fa72 100644
--- a/pretext/Sort/TheInsertionSort.ptx
+++ b/pretext/Sort/TheInsertionSort.ptx
@@ -235,4 +235,7 @@ main()
 
     </exercise>
 </reading-questions>
+    <conclusion><p>
+        <!-- extra space before the progress bar -->            
+    </p></conclusion>
     </section>
diff --git a/pretext/Sort/TheMergeSort.ptx b/pretext/Sort/TheMergeSort.ptx
index 025b8b81..97396314 100644
--- a/pretext/Sort/TheMergeSort.ptx
+++ b/pretext/Sort/TheMergeSort.ptx
@@ -355,4 +355,7 @@ main()
 
     </exercise>
 </reading-questions>
+    <conclusion><p>
+        <!-- extra space before the progress bar -->            
+    </p></conclusion>
     </section>
diff --git a/pretext/Sort/TheQuickSort.ptx b/pretext/Sort/TheQuickSort.ptx
index 013bb252..468dbc4c 100644
--- a/pretext/Sort/TheQuickSort.ptx
+++ b/pretext/Sort/TheQuickSort.ptx
@@ -385,4 +385,7 @@ main()
 
     </exercise>
 </reading-questions>
+    <conclusion><p>
+        <!-- extra space before the progress bar -->            
+    </p></conclusion>
     </section>
diff --git a/pretext/Sort/TheSelectionSort.ptx b/pretext/Sort/TheSelectionSort.ptx
index 9987cb82..951d5b70 100755
--- a/pretext/Sort/TheSelectionSort.ptx
+++ b/pretext/Sort/TheSelectionSort.ptx
@@ -206,4 +206,7 @@ main()
 
     </exercise>
 </reading-questions>
+    <conclusion><p>
+        <!-- extra space before the progress bar -->            
+    </p></conclusion>
     </section>
diff --git a/pretext/Sort/TheShellSort.ptx b/pretext/Sort/TheShellSort.ptx
index 462b20d5..40601ae7 100644
--- a/pretext/Sort/TheShellSort.ptx
+++ b/pretext/Sort/TheShellSort.ptx
@@ -287,4 +287,7 @@ main()
 
     </exercise>
 </reading-questions>
+    <conclusion><p>
+        <!-- extra space before the progress bar -->            
+    </p></conclusion>
     </section>
diff --git a/pretext/Sort/sorting.ptx b/pretext/Sort/sorting.ptx
index ae45ae5d..2df4abdb 100755
--- a/pretext/Sort/sorting.ptx
+++ b/pretext/Sort/sorting.ptx
@@ -27,5 +27,8 @@
             exchange is a costly operation and the total number of exchanges will
             also be important for evaluating the overall efficiency of the
             algorithm.</p>
+    <conclusion><p>
+        <!-- extra space before the progress bar -->            
+    </p></conclusion>
     </section>