diff --git a/mod/quiz/accessrules.php b/mod/quiz/accessrules.php
index e7eeb711fe4..c7f7d07d585 100644
--- a/mod/quiz/accessrules.php
+++ b/mod/quiz/accessrules.php
@@ -224,7 +224,7 @@ class quiz_access_manager {
         $url = $this->_quizobj->view_url();
         if ($this->securewindow_required($canpreview)) {
             print_header();
-            print_box_start();
+            echo $OUTPUT->box_start();
             if ($message) {
                 echo '<p>' . $message . '</p><p>' . get_string('windowclosing', 'quiz') . '</p>';
                 $delay = 5;
@@ -232,7 +232,7 @@ class quiz_access_manager {
                 echo '<p>' . get_string('pleaseclose', 'quiz') . '</p>';
                 $delay = 0;
             }
-            print_box_end();
+            echo $OUTPUT->box_end();
             $PAGE->requires->js_function_call('quiz_secure_window.close', array($url, $delay));
             echo $OUTPUT->footer();
             die();
@@ -624,9 +624,9 @@ class password_access_rule extends quiz_access_rule_base {
         }
         if (trim(strip_tags($this->_quiz->intro))) {
             $cm = get_coursemodule_from_id('quiz', $this->_quiz->id);
-            $output .= print_box(format_module_intro('quiz', $this->_quiz, $cm->id), 'generalbox', 'intro', true);
+            $output .= $OUTPUT->box(format_module_intro('quiz', $this->_quiz, $cm->id), 'generalbox', 'intro');
         }
-        $output .= print_box_start('generalbox', 'passwordbox', true);
+        $output .= $OUTPUT->box_start('generalbox', 'passwordbox');
 
     /// If they have previously tried and failed to enter a password, tell them it was wrong.
         if (!empty($enteredpassword)) {
@@ -650,7 +650,7 @@ class password_access_rule extends quiz_access_rule_base {
         $output .= "</form>\n";
 
     /// Finish page.
-        $output .= print_box_end(true);
+        $output .= $OUTPUT->box_end();
 
     /// return or display form.
         if ($return) {
diff --git a/mod/quiz/attempt.php b/mod/quiz/attempt.php
index c9d0e09a2ed..35758a54c0a 100644
--- a/mod/quiz/attempt.php
+++ b/mod/quiz/attempt.php
@@ -13,7 +13,7 @@
     require_once(dirname(__FILE__) . '/../../config.php');
     require_once($CFG->dirroot . '/mod/quiz/locallib.php');
 
-/// Look for old-style URLs, such as may be in the logs, and redirect them to startattemtp.php 
+/// Look for old-style URLs, such as may be in the logs, and redirect them to startattemtp.php
     if ($id = optional_param('id', 0, PARAM_INTEGER)) {
         redirect($CFG->wwwroot . '/mod/quiz/startattempt.php?cmid=' . $id . '&sesskey=' . sesskey());
     } else if ($qid = optional_param('q', 0, PARAM_INTEGER)) {
@@ -108,10 +108,10 @@
 
     /// Inform teachers of any restrictions that would apply to students at this point.
         if ($messages) {
-            print_box_start('quizaccessnotices');
+            echo $OUTPUT->box_start('quizaccessnotices');
             echo $OUTPUT->heading(get_string('accessnoticesheader', 'quiz'), 3);
             $accessmanager->print_messages($messages);
-            print_box_end();
+            echo $OUTPUT->box_end();
         }
     }
 
diff --git a/mod/quiz/edit.php b/mod/quiz/edit.php
index 7a9367dc090..bf546cf643a 100644
--- a/mod/quiz/edit.php
+++ b/mod/quiz/edit.php
@@ -542,7 +542,7 @@ if ($quiz->shufflequestions) {
     $notifystrings[] = get_string('shufflequestionsselected', 'quiz', $updatelink);
 }
 if (!empty($notifystrings)) {
-    print_box('<p>' . implode('</p><p>', $notifystrings) . '</p>', 'statusdisplay');
+    echo $OUTPUT->box('<p>' . implode('</p><p>', $notifystrings) . '</p>', 'statusdisplay');
 }
 
 if ($quiz_reordertool) {
diff --git a/mod/quiz/editlib.php b/mod/quiz/editlib.php
index e092004e478..6076e687846 100644
--- a/mod/quiz/editlib.php
+++ b/mod/quiz/editlib.php
@@ -1064,7 +1064,7 @@ class quiz_question_bank_view extends question_bank_view {
 
     public function display($tabname, $page, $perpage, $sortorder,
             $sortorderdecoded, $cat, $recurse, $showhidden, $showquestiontext) {
-
+        global $OUTPUT;
         if ($this->process_actions_needing_ui()) {
             return;
         }
@@ -1075,7 +1075,7 @@ class quiz_question_bank_view extends question_bank_view {
         }
         $this->print_category_info($category);
 
-        print_box_start('generalbox questionbank');
+        echo $OUTPUT->box_start('generalbox questionbank');
 
         $this->display_category_form($this->contexts->having_one_edit_tab_cap($tabname),
                 $this->baseurl, $cat);
@@ -1086,16 +1086,17 @@ class quiz_question_bank_view extends question_bank_view {
                 $this->contexts->having_cap('moodle/question:add'));
 
         $this->display_options($recurse, $showhidden, $showquestiontext);
-        print_box_end();
+        echo $OUTPUT->box_end();
     }
 
     protected function print_choose_category_message($categoryandcontext) {
-        print_box_start('generalbox questionbank');
+        global $OUTPUT;
+        echo $OUTPUT->box_start('generalbox questionbank');
         $this->display_category_form($this->contexts->having_one_edit_tab_cap('edit'), $this->baseurl, $categoryandcontext);
         echo "<p style=\"text-align:center;\"><b>";
         print_string('selectcategoryabove', 'quiz');
         echo "</b></p>";
-        print_box_end();
+        echo $OUTPUT->box_end();
     }
 
     protected function print_category_info($category) {
@@ -1200,4 +1201,4 @@ function quiz_print_status_bar($quiz) {
     <?php
 }
 
-?>
\ No newline at end of file
+?>
diff --git a/mod/quiz/lib.php b/mod/quiz/lib.php
index 95d93213935..88577b52d36 100644
--- a/mod/quiz/lib.php
+++ b/mod/quiz/lib.php
@@ -238,7 +238,7 @@ function quiz_user_outline($course, $user, $mod, $quiz) {
     }
 
 /**
- * Is this a graded quiz? If this method returns true, you can assume that 
+ * Is this a graded quiz? If this method returns true, you can assume that
  * $quiz->grade and $quiz->sumgrades are non-zero (for example, if you want to
  * divide by them).
  *
@@ -434,7 +434,7 @@ function quiz_update_grades($quiz, $userid=0, $nullifnone=true) {
         quiz_grade_item_update($quiz);
     }
 }
-    
+
 /**
  * Update all grades in gradebook.
  *
@@ -480,7 +480,7 @@ function quiz_upgrade_grades() {
  * @return int 0 if ok, error code otherwise
  */
 function quiz_grade_item_update($quiz, $grades=NULL) {
-    global $CFG;
+    global $CFG, $OUTPUT;
     if (!function_exists('grade_update')) { //workaround for buggy PHP versions
         require_once($CFG->libdir.'/gradelib.php');
     }
@@ -538,13 +538,13 @@ function quiz_grade_item_update($quiz, $grades=NULL) {
                 $message = get_string('gradeitemislocked', 'grades');
                 $back_link = $CFG->wwwroot . '/mod/quiz/report.php?q=' . $quiz->id . '&amp;mode=overview';
                 $regrade_link = qualified_me() . '&amp;confirm_regrade=1';
-                print_box_start('generalbox', 'notice');
+                echo $OUTPUT->box_start('generalbox', 'notice');
                 echo '<p>'. $message .'</p>';
                 echo '<div class="buttons">';
                 print_single_button($regrade_link, null, get_string('regradeanyway', 'grades'), 'post', $CFG->framename);
                 print_single_button($back_link,  null,  get_string('cancel'),  'post',  $CFG->framename);
                 echo '</div>';
-                print_box_end();
+                echo $OUTPUT->box_end();
 
                 return GRADE_UPDATE_ITEM_LOCKED;
             }
@@ -1146,7 +1146,7 @@ function quiz_question_list_instances($questionid) {
 /**
  * Implementation of the function for printing the form elements that control
  * whether the course reset functionality affects the quiz.
- * 
+ *
  * @param $mform form passed by reference
  */
 function quiz_reset_course_form_definition(&$mform) {
diff --git a/mod/quiz/report/statistics/report.php b/mod/quiz/report/statistics/report.php
index c359c3d499c..383e8cdbdc2 100644
--- a/mod/quiz/report/statistics/report.php
+++ b/mod/quiz/report/statistics/report.php
@@ -13,7 +13,7 @@ require_once($CFG->dirroot.'/mod/quiz/report/statistics/statistics_form.php');
 require_once($CFG->dirroot.'/mod/quiz/report/statistics/statistics_table.php');
 
 class quiz_statistics_report extends quiz_default_report {
-    
+
     /**
      * @var object instance of table class used for main questions stats table.
      */
@@ -36,14 +36,14 @@ class quiz_statistics_report extends quiz_default_report {
         $pageoptions['id'] = $cm->id;
         $pageoptions['q'] = $quiz->id;
         $pageoptions['mode'] = 'statistics';
-        
+
         $questions = quiz_report_load_questions($quiz);
         // Load the question type specific information
         if (!get_question_options($questions)) {
             print_error('cannotloadquestion', 'question');
         }
 
-        
+
         $reporturl = new moodle_url($CFG->wwwroot.'/mod/quiz/report.php', $pageoptions);
 
         $mform = new mod_quiz_report_statistics($reporturl);
@@ -60,7 +60,7 @@ class quiz_statistics_report extends quiz_default_report {
 
         /// find out current groups mode
         $currentgroup = groups_get_activity_group($cm, true);
-        
+
 
         $nostudentsingroup = false;//true if a group is selected and their is noeone in it.
         if (!empty($currentgroup)) {
@@ -72,7 +72,7 @@ class quiz_statistics_report extends quiz_default_report {
         } else {
             $groupstudents = array();
         }
-        
+
         if ($recalculate){
             if ($todelete = $DB->get_records_menu('quiz_statistics', array('quizid' => $quiz->id, 'groupid'=> (int)$currentgroup, 'allattempts'=>$useallattempts))){
                 list($todeletesql, $todeleteparams) = $DB->get_in_or_equal(array_keys($todelete));
@@ -88,8 +88,8 @@ class quiz_statistics_report extends quiz_default_report {
             }
             redirect($reporturl);
         }
-        
-        
+
+
         $this->table = new quiz_report_statistics_table();
         $filename = "$course->shortname-".format_string($quiz->name,true);
         $this->table->is_downloading($download, $filename, get_string('quizstructureanalysis', 'quiz_statistics'));
@@ -114,7 +114,7 @@ class quiz_statistics_report extends quiz_default_report {
             $mform->display();
         }
 
-        list($quizstats, $questions, $subquestions, $s, $usingattemptsstring) 
+        list($quizstats, $questions, $subquestions, $s, $usingattemptsstring)
             = $this->quiz_questions_stats($quiz, $currentgroup, $nostudentsingroup,
                                         $useallattempts, $groupstudents, $questions);
 
@@ -126,7 +126,7 @@ class quiz_statistics_report extends quiz_default_report {
         if ($s){
             $this->table->setup($quiz, $cm->id, $reporturl, $s);
         }
-        
+
         if (!$qid){//main page
             $this->output_quiz_info_table($course, $cm, $quiz, $quizstats, $usingattemptsstring, $currentgroup, $groupstudents, $useallattempts, $download, $reporturl, $everything);
             $this->output_quiz_structure_analysis_table($s, $questions, $subquestions);
@@ -170,7 +170,7 @@ class quiz_statistics_report extends quiz_default_report {
         }
         return true;
     }
-    
+
     function sort_response_details($detail1, $detail2){
         if ($detail1->credit == $detail2->credit){
             return strcmp($detail1->answer, $detail2->answer);
@@ -184,31 +184,31 @@ class quiz_statistics_report extends quiz_default_report {
             return ($answer1->rcount > $answer2->rcount)? -1 : 1;
         }
     }
-    
+
     function output_individual_question_data($quiz, $question, $reporturl, $quizstats){
-        global $CFG, $DB, $QTYPES;
+        global $CFG, $DB, $QTYPES, $OUTPUT;
         require_once($CFG->dirroot.'/mod/quiz/report/statistics/statistics_question_table.php');
         $this->qtable = new quiz_report_statistics_question_table($question->id);
         $downloadtype = $this->table->is_downloading();
         if (!$this->table->is_downloading()){
             $datumfromtable = $this->table->format_row($question);
-    
+
             $questioninfotable = new object();
             $questioninfotable->align = array('center', 'center');
             $questioninfotable->width = '60%';
             $questioninfotable->class = 'generaltable titlesleft';
-            
+
             $questioninfotable->data = array();
             $questioninfotable->data[] = array(get_string('modulename', 'quiz'), $quiz->name);
             $questioninfotable->data[] = array(get_string('questionname', 'quiz_statistics'), $question->name.'&nbsp;'.$datumfromtable['actions']);
             $questioninfotable->data[] = array(get_string('questiontype', 'quiz_statistics'), $datumfromtable['icon'].'&nbsp;'.get_string($question->qtype,'quiz').'&nbsp;'.$datumfromtable['icon']);
             $questioninfotable->data[] = array(get_string('positions', 'quiz_statistics'), $question->_stats->positions);
-    
+
             $questionstatstable = new object();
             $questionstatstable->align = array('center', 'center');
             $questionstatstable->width = '60%';
             $questionstatstable->class = 'generaltable titlesleft';
-    
+
             unset($datumfromtable['number']);
             unset($datumfromtable['icon']);
             $actions = $datumfromtable['actions'];
@@ -227,12 +227,12 @@ class quiz_statistics_report extends quiz_default_report {
             }
             echo $OUTPUT->heading(get_string('questioninformation', 'quiz_statistics'));
             print_table($questioninfotable);
-            
-            print_box(format_text($question->questiontext, $question->questiontextformat).$actions, 'boxaligncenter generalbox boxwidthnormal mdl-align');
-    
+
+            echo $OUTPUT->box(format_text($question->questiontext, $question->questiontextformat).$actions, 'boxaligncenter generalbox boxwidthnormal mdl-align');
+
             echo $OUTPUT->heading(get_string('questionstatistics', 'quiz_statistics'));
             print_table($questionstatstable);
-            
+
         } else {
             $this->qtable->export_class_instance($this->table->export_class_instance());
             $questiontabletitle = !empty($question->number)?'('.$question->number.') ':'';
@@ -253,7 +253,7 @@ class quiz_statistics_report extends quiz_default_report {
             if ($this->table->is_downloading()){
                 $exportclass->output_headers($this->qtable->headers);
             }
-    
+
             $responses = $DB->get_records('quiz_question_response_stats', array('quizstatisticsid' => $quizstats->id, 'questionid' => $question->id), 'credit DESC, subqid ASC, aid ASC, rcount DESC');
             $responses = quiz_report_index_by_keys($responses, array('subqid', 'aid'), false);
             foreach ($responses as $subqid => $response){
@@ -278,12 +278,12 @@ class quiz_statistics_report extends quiz_default_report {
                 uasort($tresponsesforsubq, array('quiz_statistics_report', 'sort_response_details'));
                 foreach ($tresponsesforsubq as $aid => $teacherresponse){
                     $teacherresponserow = new object();
-                    $teacherresponserow->response = $teacherresponse->answer; 
+                    $teacherresponserow->response = $teacherresponse->answer;
                     $teacherresponserow->rcount = 0;
                     $teacherresponserow->subq = $subq;
                     $teacherresponserow->credit = $teacherresponse->credit;
                     if (isset($responses[$subqid][$aid])){
-                        $singleanswer = count($responses[$subqid][$aid])==1 && 
+                        $singleanswer = count($responses[$subqid][$aid])==1 &&
                                         ($responses[$subqid][$aid][0]->response == $teacherresponserow->response);
                         if (!$singleanswer && $qhaswildcards){
                             $this->qtable->add_separator();
@@ -319,10 +319,10 @@ class quiz_statistics_report extends quiz_default_report {
         if (!$this->table->is_downloading()){
             $url = $reporturl->out();
             $text = get_string('backtoquizreport', 'quiz_statistics');
-            print_box("<a href=\"$url\">$text</a>", 'boxaligncenter generalbox boxwidthnormal mdl-align');
+            echo $OUTPUT->box("<a href=\"$url\">$text</a>", 'boxaligncenter generalbox boxwidthnormal mdl-align');
         }
     }
-        
+
     function output_quiz_structure_analysis_table($s, $questions, $subquestions){
         global $OUTPUT;
         if ($s){
@@ -343,7 +343,7 @@ class quiz_statistics_report extends quiz_default_report {
             $this->table->finish_output(!$this->table->is_downloading());
         }
     }
-    
+
     function output_quiz_info_table($course, $cm, $quiz, $quizstats, $usingattemptsstring,
                     $currentgroup, $groupstudents, $useallattempts, $download, $reporturl, $everything){
         global $DB, $OUTPUT;
@@ -408,11 +408,11 @@ class quiz_statistics_report extends quiz_default_report {
                 if (!$a->count = $DB->count_records_sql($sql, array('time'=>$quizstats->timemodified)+$qaparams)){
                     $a->count = 0;
                 }
-                $quizinformationtablehtml .= print_box_start('boxaligncenter generalbox boxwidthnormal mdl-align', '', true);
+                $quizinformationtablehtml .= $OUTPUT->box_start('boxaligncenter generalbox boxwidthnormal mdl-align');
                 $quizinformationtablehtml .= get_string('lastcalculated', 'quiz_statistics', $a);
                 $quizinformationtablehtml .= print_single_button($reporturl->out(true), $reporturl->params()+array('recalculate'=>1),
                                     get_string('recalculatenow', 'quiz_statistics'), 'post', '', true);
-                $quizinformationtablehtml .= print_box_end(true);
+                $quizinformationtablehtml .= $OUTPUT->box_end();
             }
             $downloadoptions = $this->table->get_download_menu();
             $quizinformationtablehtml .= '<form action="'. $this->table->baseurl .'" method="post">';
@@ -450,23 +450,23 @@ class quiz_statistics_report extends quiz_default_report {
         if (!$nostudentsingroup){
             //Calculating_MEAN_of_grades_for_all_attempts_by_students
             //http://docs.moodle.org/en/Development:Quiz_item_analysis_calculations_in_practise#Calculating_MEAN_of_grades_for_all_attempts_by_students
-        
+
             list($fromqa, $whereqa, $qaparams) = quiz_report_attempts_sql($quizid, $currentgroup, $groupstudents);
-    
+
             $sql = 'SELECT (CASE WHEN attempt=1 THEN 1 ELSE 0 END) AS isfirst, COUNT(1) AS countrecs, SUM(sumgrades) AS total ' .
                     'FROM '.$fromqa.
                     'WHERE ' .$whereqa.
                     'GROUP BY (attempt=1)';
-            
+
             if (!$attempttotals = $DB->get_records_sql($sql, $qaparams)){
                 $s = 0;
                 $usingattemptsstring = '';
             } else {
                 $firstattempt = $attempttotals[1];
                 $allattempts = new object();
-                $allattempts->countrecs = $firstattempt->countrecs + 
+                $allattempts->countrecs = $firstattempt->countrecs +
                                 (isset($attempttotals[0])?$attempttotals[0]->countrecs:0);
-                $allattempts->total = $firstattempt->total + 
+                $allattempts->total = $firstattempt->total +
                                 (isset($attempttotals[0])?$attempttotals[0]->total:0);
                 if ($useallattempts){
                     $usingattempts = $allattempts;
@@ -496,7 +496,7 @@ class quiz_statistics_report extends quiz_default_report {
         }
         //recalculate sql again this time possibly including test for first attempt.
         list($fromqa, $whereqa, $qaparams) = quiz_report_attempts_sql($quizid, $currentgroup, $groupstudents, $useallattempts);
-        
+
         //get the median
         if ($s) {
 
@@ -517,7 +517,7 @@ class quiz_statistics_report extends quiz_default_report {
             }
             $quizstats->median = array_sum($mediangrades) / count($mediangrades);
             if ($s>1){
-                //fetch sum of squared, cubed and power 4d 
+                //fetch sum of squared, cubed and power 4d
                 //differences between grades and mean grade
                 $mean = $usingattempts->total / $s;
                 $sql = "SELECT " .
@@ -530,29 +530,29 @@ class quiz_statistics_report extends quiz_default_report {
                 if (!$powers = $DB->get_record_sql($sql, $params)){
                     print_error('errorpowers', 'quiz_statistics');
                 }
-                
+
                 //Standard_Deviation
                 //see http://docs.moodle.org/en/Development:Quiz_item_analysis_calculations_in_practise#Standard_Deviation
-                
-                $quizstats->standarddeviation = sqrt($powers->power2 / ($s -1));
-                
 
-                
+                $quizstats->standarddeviation = sqrt($powers->power2 / ($s -1));
+
+
+
                 //Skewness_and_Kurtosis
                 if ($s>2){
                     //see http://docs.moodle.org/en/Development:Quiz_item_analysis_calculations_in_practise#Skewness_and_Kurtosis
                     $m2= $powers->power2 / $s;
                     $m3= $powers->power3 / $s;
                     $m4= $powers->power4 / $s;
-                    
+
                     $k2= $s*$m2/($s-1);
                     $k3= $s*$s*$m3/(($s-1)*($s-2));
                     if ($k2){
                         $quizstats->skewness = $k3 / (pow($k2, 3/2));
                     }
                 }
-    
-    
+
+
                 if ($s>3){
                     $k4= $s*$s*((($s+1)*$m4)-(3*($s-1)*$m2*$m2))/(($s-1)*($s-2)*($s-3));
                     if ($k2){
@@ -582,7 +582,7 @@ class quiz_statistics_report extends quiz_default_report {
         }
         return array($s, $usingattemptsstring, $quizstats, $qstats);
     }
-    
+
     function quiz_questions_stats($quiz, $currentgroup, $nostudentsingroup, $useallattempts, $groupstudents, $questions){
         global $DB;
         $timemodified = time() - QUIZ_REPORT_TIME_TO_CACHE_STATS;
diff --git a/mod/quiz/view.php b/mod/quiz/view.php
index 175f111f2fc..2ea3c72ecdd 100644
--- a/mod/quiz/view.php
+++ b/mod/quiz/view.php
@@ -93,7 +93,7 @@
 /// Print quiz name and description
     echo $OUTPUT->heading(format_string($quiz->name));
     if (trim(strip_tags($quiz->intro))) {
-        print_box(format_module_intro('quiz', $quiz, $cm->id), 'generalbox', 'intro');
+        echo $OUTPUT->box(format_module_intro('quiz', $quiz, $cm->id), 'generalbox', 'intro');
     }
 
 /// Display information about this quiz.
@@ -101,9 +101,9 @@
     if ($quiz->attempts != 1) {
         $messages[] = get_string('gradingmethod', 'quiz', quiz_get_grading_option_name($quiz->grademethod));
     }
-    print_box_start('quizinfo');
+    echo $OUTPUT->box_start('quizinfo');
     $accessmanager->print_messages($messages);
-    print_box_end();
+    echo $OUTPUT->box_end();
 
 /// Show number of attempts summary to those who can view reports.
     if (has_capability('mod/quiz:viewreports', $context)) {
@@ -123,7 +123,7 @@
 
 /// If they are not enrolled in this course in a good enough role, tell them to enrol.
     if (!($canattempt || $canpreview || $canreviewmine)) {
-        print_box('<p>' . get_string('youneedtoenrol', 'quiz') . "</p>\n\n<p>" .
+        echo $OUTPUT->box('<p>' . get_string('youneedtoenrol', 'quiz') . "</p>\n\n<p>" .
                 print_continue($CFG->wwwroot . '/course/view.php?id=' . $course->id, true) .
                 "</p>\n", 'generalbox', 'notice');
         echo $OUTPUT->footer();
@@ -333,13 +333,13 @@
         }
 
         if ($resultinfo) {
-            print_box($resultinfo, 'generalbox', 'feedback');
+            echo $OUTPUT->box($resultinfo, 'generalbox', 'feedback');
         }
     }
 
 /// Determine if we should be showing a start/continue attempt button,
 /// or a button to go back to the course page.
-    print_box_start('quizattempt');
+    echo $OUTPUT->box_start('quizattempt');
     $buttontext = ''; // This will be set something if as start/continue attempt button should appear.
     if (!$quiz->questions) {
         echo $OUTPUT->heading(get_string("noquestions", "quiz"));
@@ -382,10 +382,10 @@
     } else {
         print_continue($CFG->wwwroot . '/course/view.php?id=' . $course->id);
     }
-    print_box_end();
+    echo $OUTPUT->box_end();
 
     // Mark module as viewed (note, we do this here and not in finish_page,
-    // otherwise the 'not enrolled' error conditions would result in marking 
+    // otherwise the 'not enrolled' error conditions would result in marking
     // 'viewed', I think it's better if they don't.)
     $completion=new completion_info($course);
     $completion->set_module_viewed($cm);