diff --git a/notes/delete.php b/notes/delete.php
index 573d068d961..ccd2b16f045 100644
--- a/notes/delete.php
+++ b/notes/delete.php
@@ -1,24 +1,34 @@
 <?php
+// This file is part of Moodle - http://moodle.org/
+//
+// Moodle is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// Moodle is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with Moodle.  If not, see <http://www.gnu.org/licenses/>.
 
 require_once('../config.php');
 require_once('lib.php');
 
-// retrieve parameters
 $noteid = required_param('id', PARAM_INT);
 
-$PAGE->set_url('/notes/delete.php', array('id'=>$noteid));
+$PAGE->set_url('/notes/delete.php', array('id' => $noteid));
 
-// locate note information
 if (!$note = note_load($noteid)) {
     print_error('invalidid');
 }
 
-// locate course information
-if (!$course = $DB->get_record('course', array('id'=>$note->courseid))) {
+if (!$course = $DB->get_record('course', array('id' => $note->courseid))) {
     print_error('invalidcourseid');
 }
 
-// require login to access notes
 require_login($course);
 
 if (empty($CFG->enablenotes)) {
@@ -29,16 +39,14 @@ if (!$user = $DB->get_record('user', array('id' => $note->userid))) {
     print_error('invaliduserid');
 }
 
-// locate context information
 $context = context_course::instance($course->id);
 
-// check capability
 if (!has_capability('moodle/notes:manage', $context)) {
     print_error('nopermissiontodelete', 'notes');
 }
 
 if (data_submitted() && confirm_sesskey()) {
-//if data was submitted and is valid, then delete note
+    // If data was submitted and is valid, then delete note.
     $returnurl = $CFG->wwwroot . '/notes/index.php?course=' . $course->id . '&amp;user=' . $note->userid;
     if (!note_delete($note)) {
         print_error('cannotdeletepost', 'notes', $returnurl);
@@ -46,24 +54,29 @@ if (data_submitted() && confirm_sesskey()) {
     redirect($returnurl);
 
 } else {
-// if data was not submitted yet, then show note data with a delete confirmation form
+    // If data was not submitted yet, then show note data with a delete confirmation form.
     $strnotes = get_string('notes', 'notes');
-    $optionsyes = array('id'=>$noteid, 'sesskey'=>sesskey());
-    $optionsno  = array('course'=>$course->id, 'user'=>$note->userid);
+    $optionsyes = array('id' => $noteid, 'sesskey' => sesskey());
+    $optionsno  = array('course' => $course->id, 'user' => $note->userid);
 
-// output HTML
+    // Output HTML.
     $link = null;
-    if (has_capability('moodle/course:viewparticipants', $context) || has_capability('moodle/site:viewparticipants', context_system::instance())) {
-        $link = new moodle_url('/user/index.php',array('id'=>$course->id));
+    if (has_capability('moodle/course:viewparticipants', $context)
+        || has_capability('moodle/site:viewparticipants', context_system::instance())) {
+
+        $link = new moodle_url('/user/index.php', array('id' => $course->id));
     }
     $PAGE->navbar->add(get_string('participants'), $link);
-    $PAGE->navbar->add(fullname($user), new moodle_url('/user/view.php', array('id'=>$user->id,'course'=>$course->id)));
-    $PAGE->navbar->add(get_string('notes', 'notes'), new moodle_url('/notes/index.php', array('user'=>$user->id,'course'=>$course->id)));
+    $PAGE->navbar->add(fullname($user), new moodle_url('/user/view.php', array('id' => $user->id, 'course' => $course->id)));
+    $PAGE->navbar->add(get_string('notes', 'notes'),
+                       new moodle_url('/notes/index.php', array('user' => $user->id, 'course' => $course->id)));
     $PAGE->navbar->add(get_string('delete'));
     $PAGE->set_title($course->shortname . ': ' . $strnotes);
     $PAGE->set_heading($course->fullname);
     echo $OUTPUT->header();
-    echo $OUTPUT->confirm(get_string('deleteconfirm', 'notes'), new moodle_url('delete.php',$optionsyes),  new moodle_url('index.php',$optionsno));
+    echo $OUTPUT->confirm(get_string('deleteconfirm', 'notes'),
+                          new moodle_url('delete.php', $optionsyes),
+                          new moodle_url('index.php', $optionsno));
     echo '<br />';
     note_print($note, NOTES_SHOW_BODY | NOTES_SHOW_HEAD);
     echo $OUTPUT->footer();
diff --git a/notes/edit.php b/notes/edit.php
index be9ed29978f..88a697f7965 100644
--- a/notes/edit.php
+++ b/notes/edit.php
@@ -1,23 +1,36 @@
 <?php
+// This file is part of Moodle - http://moodle.org/
+//
+// Moodle is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// Moodle is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with Moodle.  If not, see <http://www.gnu.org/licenses/>.
 
 require_once('../config.php');
 require_once('lib.php');
 require_once('edit_form.php');
 
-/// retrieve parameters
 $noteid = optional_param('id', 0, PARAM_INT);
 
 $url = new moodle_url('/notes/edit.php');
 
 if ($noteid) {
-    //existing note
+    // Existing note.
     $url->param('id', $noteid);
     if (!$note = note_load($noteid)) {
         print_error('invalidid', 'notes');
     }
 
 } else {
-    // adding new note
+    // Adding new note.
     $courseid = required_param('courseid', PARAM_INT);
     $userid   = required_param('userid', PARAM_INT);
     $state    = optional_param('publishstate', NOTES_STATE_PUBLIC, PARAM_ALPHA);
@@ -36,19 +49,16 @@ if ($noteid) {
 
 $PAGE->set_url($url);
 
-/// locate course information
-if (!$course = $DB->get_record('course', array('id'=>$note->courseid))) {
+if (!$course = $DB->get_record('course', array('id' => $note->courseid))) {
     print_error('invalidcourseid');
 }
 
-/// require login to access notes
 require_login($course);
 
 if (empty($CFG->enablenotes)) {
     print_error('notesdisabled', 'notes');
 }
 
-/// locate context information
 $context = context_course::instance($course->id);
 require_capability('moodle/notes:manage', $context);
 
@@ -56,19 +66,16 @@ if (!$user = $DB->get_record('user', array('id' => $note->userid))) {
     print_error('invaliduserid');
 }
 
-/// create form
 $noteform = new note_edit_form();
-
-/// set defaults
 $noteform->set_data($note);
 
-/// if form was cancelled then return to the notes list of the note
+// If form was cancelled then return to the notes list of the note.
 if ($noteform->is_cancelled()) {
     redirect($CFG->wwwroot . '/notes/index.php?course=' . $note->courseid . '&amp;user=' . $note->userid);
 }
 
-/// if data was submitted and validated, then save it to database
-if ($note = $noteform->get_data()){
+// If data was submitted and validated, then save it to database.
+if ($note = $noteform->get_data()) {
     if ($noteid) {
         // A noteid has been used, we don't allow editing of course or user so
         // lets unset them to be sure we never change that by accident.
@@ -76,7 +83,7 @@ if ($note = $noteform->get_data()){
         unset($note->userid);
     }
     note_save($note);
-    // redirect to notes list that contains this note
+    // Redirect to notes list that contains this note.
     redirect($CFG->wwwroot . '/notes/index.php?course=' . $note->courseid . '&amp;user=' . $note->userid);
 }
 
@@ -86,14 +93,17 @@ if ($noteid) {
     $strnotes = get_string('addnewnote', 'notes');
 }
 
-/// output HTML
+// Output HTML.
 $link = null;
-if (has_capability('moodle/course:viewparticipants', $context) || has_capability('moodle/site:viewparticipants', context_system::instance())) {
-    $link = new moodle_url('/user/index.php',array('id'=>$course->id));
+if (has_capability('moodle/course:viewparticipants', $context)
+    || has_capability('moodle/site:viewparticipants', context_system::instance())) {
+
+    $link = new moodle_url('/user/index.php', array('id' => $course->id));
 }
 $PAGE->navbar->add(get_string('participants'), $link);
-$PAGE->navbar->add(fullname($user), new moodle_url('/user/view.php', array('id'=>$user->id,'course'=>$course->id)));
-$PAGE->navbar->add(get_string('notes', 'notes'), new moodle_url('/notes/index.php', array('user'=>$user->id,'course'=>$course->id)));
+$PAGE->navbar->add(fullname($user), new moodle_url('/user/view.php', array('id' => $user->id, 'course' => $course->id)));
+$PAGE->navbar->add(get_string('notes', 'notes'),
+                   new moodle_url('/notes/index.php', array('user' => $user->id, 'course' => $course->id)));
 $PAGE->navbar->add($strnotes);
 $PAGE->set_title($course->shortname . ': ' . $strnotes);
 $PAGE->set_heading($course->fullname);
diff --git a/notes/edit_form.php b/notes/edit_form.php
index e66c4346cc2..5494a5e87ca 100644
--- a/notes/edit_form.php
+++ b/notes/edit_form.php
@@ -1,18 +1,35 @@
 <?php
+// This file is part of Moodle - http://moodle.org/
+//
+// Moodle is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// Moodle is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with Moodle.  If not, see <http://www.gnu.org/licenses/>.
 
 if (!defined('MOODLE_INTERNAL')) {
-    die('Direct access to this script is forbidden.');    ///  It must be included from a Moodle page
+    die('Direct access to this script is forbidden.'); // It must be included from a Moodle page.
 }
 
 require_once($CFG->libdir.'/formslib.php');
 
 class note_edit_form extends moodleform {
 
-    function definition() {
+    /**
+     * Define the form for editing notes
+     */
+    public function definition() {
         $mform =& $this->_form;
         $mform->addElement('header', 'general', get_string('note', 'notes'));
 
-        $mform->addElement('textarea', 'content', get_string('content', 'notes'), array('rows'=>15, 'cols'=>40));
+        $mform->addElement('textarea', 'content', get_string('content', 'notes'), array('rows' => 15, 'cols' => 40));
         $mform->setType('content', PARAM_RAW);
         $mform->addRule('content', get_string('nocontent', 'notes'), 'required', null, 'client');
 
diff --git a/notes/externallib.php b/notes/externallib.php
index 92698f0d63f..98f9985b6df 100644
--- a/notes/externallib.php
+++ b/notes/externallib.php
@@ -84,14 +84,14 @@ class core_notes_external extends external_api {
 
         // Retrieve all courses.
         $courseids = array();
-        foreach($params['notes'] as $note) {
+        foreach ($params['notes'] as $note) {
             $courseids[] = $note['courseid'];
         }
         $courses = $DB->get_records_list("course", "id", $courseids);
 
         // Retrieve all users of the notes.
         $userids = array();
-        foreach($params['notes'] as $note) {
+        foreach ($params['notes'] as $note) {
             $userids[] = $note['userid'];
         }
         list($sqluserids, $sqlparams) = $DB->get_in_or_equal($userids, SQL_PARAMS_NAMED, 'userid_');
@@ -191,7 +191,7 @@ class core_notes_external extends external_api {
             new external_single_structure(
                 array(
                     'clientnoteid' => new external_value(PARAM_ALPHANUMEXT, 'your own id for the note', VALUE_OPTIONAL),
-                    'noteid' => new external_value(PARAM_INT, 'test this to know if it success: id of the created note when successed, -1 when failed'),
+                    'noteid' => new external_value(PARAM_INT, 'ID of the created note when successful, -1 when failed'),
                     'errormessage' => new external_value(PARAM_TEXT, 'error message - if failed', VALUE_OPTIONAL)
                 )
             )
@@ -241,7 +241,10 @@ class core_notes_external extends external_api {
                 self::validate_context($context);
                 require_capability('moodle/notes:manage', $context);
                 if (!note_delete($note)) {
-                    $warnings[] = array(array('item'=>'note', 'itemid'=>$noteid, 'warningcode'=>'savedfailed', 'message'=>'Note could not be modified'));
+                    $warnings[] = array(array('item' => 'note',
+                                              'itemid' => $noteid,
+                                              'warningcode' => 'savedfailed',
+                                              'message' => 'Note could not be modified'));
                 }
             } else {
                 $warnings[] = array('item'=>'note', 'itemid'=>$noteid, 'warningcode'=>'badid', 'message'=>'Note does not exist');
@@ -307,14 +310,22 @@ class core_notes_external extends external_api {
                 $context = context_course::instance($note->courseid);
                 self::validate_context($context);
                 require_capability('moodle/notes:view', $context);
-                list($gotnote['text'], $gotnote['format']) = external_format_text($note->content, $note->format, $context->id, 'notes', '', '');
+                list($gotnote['text'], $gotnote['format']) = external_format_text($note->content,
+                                                                                  $note->format,
+                                                                                  $context->id,
+                                                                                  'notes',
+                                                                                  '',
+                                                                                  '');
                 $gotnote['noteid'] = $note->id;
                 $gotnote['userid'] = $note->userid;
                 $gotnote['publishstate'] = $note->publishstate;
                 $gotnote['courseid'] = $note->courseid;
                 $resultnotes["notes"][] = $gotnote;
             } else {
-                $resultnotes["warnings"][] = array('item'=>'note', 'itemid'=>$noteid, 'warningcode'=>'badid', 'message'=>'Note does not exist');
+                $resultnotes["warnings"][] = array('item' => 'note',
+                                                   'itemid' => $noteid,
+                                                   'warningcode' => 'badid',
+                                                   'message' => 'Note does not exist');
             }
         }
         return $resultnotes;
@@ -417,14 +428,23 @@ class core_notes_external extends external_api {
                         $dbnote->courseid = SITEID;
                         break;
                     default:
-                        $warnings[] = array('item'=>'note', 'itemid'=>$note["id"], 'warningcode'=>'badparam', 'message'=>'Provided publishstate incorrect');
+                        $warnings[] = array('item' => 'note',
+                                            'itemid' => $note["id"],
+                                            'warningcode' => 'badparam',
+                                            'message' => 'Provided publishstate incorrect');
                         break;
                 }
                 if (!note_save($dbnote)) {
-                    $warnings[] = array('item'=>'note', 'itemid'=>$note["id"], 'warningcode'=>'savedfailed', 'message'=>'Note could not be modified');
+                    $warnings[] = array('item' => 'note',
+                                        'itemid' => $note["id"],
+                                        'warningcode' => 'savedfailed',
+                                        'message' => 'Note could not be modified');
                 }
             } else {
-                $warnings[] = array('item'=>'note', 'itemid'=>$note["id"], 'warningcode'=>'badid', 'message'=>'Note does not exist');
+                $warnings[] = array('item' => 'note',
+                                    'itemid' => $note["id"],
+                                    'warningcode' => 'badid',
+                                    'message' => 'Note does not exist');
             }
         }
         return $warnings;
diff --git a/notes/index.php b/notes/index.php
index d831b4b1897..61d919a92a5 100644
--- a/notes/index.php
+++ b/notes/index.php
@@ -1,4 +1,18 @@
 <?php
+// This file is part of Moodle - http://moodle.org/
+//
+// Moodle is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// Moodle is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with Moodle.  If not, see <http://www.gnu.org/licenses/>.
 
 /**
  * file index.php
@@ -9,7 +23,6 @@
 require_once('../config.php');
 require_once('lib.php');
 
-/// retrieve parameters
 $courseid     = optional_param('course', SITEID, PARAM_INT);
 $userid       = optional_param('user', 0, PARAM_INT);
 $filtertype   = optional_param('filtertype', '', PARAM_ALPHA);
@@ -28,7 +41,7 @@ if ($userid !== 0) {
 }
 $PAGE->set_url($url);
 
-/// tabs compatibility
+// Tabs compatibility.
 switch($filtertype) {
     case 'course':
         $courseid = $filterselect;
@@ -42,12 +55,10 @@ if (empty($courseid)) {
     $courseid = SITEID;
 }
 
-/// locate course information
-$course = $DB->get_record('course', array('id'=>$courseid), '*', MUST_EXIST);
+$course = $DB->get_record('course', array('id' => $courseid), '*', MUST_EXIST);
 
-/// locate user information
 if ($userid) {
-    $user = $DB->get_record('user', array('id'=>$userid), '*', MUST_EXIST);
+    $user = $DB->get_record('user', array('id' => $userid), '*', MUST_EXIST);
     $filtertype = 'user';
     $filterselect = $user->id;
 
@@ -63,16 +74,17 @@ if ($userid) {
     $filterselect = $course->id;
 }
 
-/// require login to access notes
 require_login($course);
-/// output HTML
+
+// Output HTML.
 if ($course->id == SITEID) {
-    $coursecontext = context_system::instance();   // SYSTEM context
+    $coursecontext = context_system::instance();
 } else {
-    $coursecontext = context_course::instance($course->id);   // Course context
+    $coursecontext = context_course::instance($course->id);
 }
+
 require_capability('moodle/notes:view', $coursecontext);
-$systemcontext = context_system::instance();   // SYSTEM context
+$systemcontext = context_system::instance();
 
 // Trigger event.
 $event = \core\event\notes_viewed::create(array(
@@ -87,8 +99,10 @@ if ($userid) {
     $PAGE->navigation->extend_for_user($user);
 } else {
     $link = null;
-    if (has_capability('moodle/course:viewparticipants', $coursecontext) || has_capability('moodle/site:viewparticipants', $systemcontext)) {
-        $link = new moodle_url('/user/index.php',array('id'=>$course->id));
+    if (has_capability('moodle/course:viewparticipants', $coursecontext)
+        || has_capability('moodle/site:viewparticipants', $systemcontext)) {
+
+        $link = new moodle_url('/user/index.php', array('id' => $course->id));
     }
 }
 
@@ -111,24 +125,46 @@ $straddnewnote = get_string('addnewnote', 'notes');
 echo $OUTPUT->box_start();
 
 if ($courseid != SITEID) {
-    //echo '<a href="#sitenotes">' . $strsitenotes . '</a> | <a href="#coursenotes">' . $strcoursenotes . '</a> | <a href="#personalnotes">' . $strpersonalnotes . '</a>';
     $context = context_course::instance($courseid);
     $addid = has_capability('moodle/notes:manage', $context) ? $courseid : 0;
     $view = has_capability('moodle/notes:view', $context);
     $fullname = format_string($course->fullname, true, array('context' => $context));
-    note_print_notes('<a name="sitenotes"></a>' . $strsitenotes, $addid, $view, 0, $userid, NOTES_STATE_SITE, 0);
-    note_print_notes('<a name="coursenotes"></a>' . $strcoursenotes. ' ('.$fullname.')', $addid, $view, $courseid, $userid, NOTES_STATE_PUBLIC, 0);
-    note_print_notes('<a name="personalnotes"></a>' . $strpersonalnotes, $addid, $view, $courseid, $userid, NOTES_STATE_DRAFT, $USER->id);
+    note_print_notes(
+        '<a name="sitenotes"></a>' . $strsitenotes,
+        $addid,
+        $view,
+        0,
+        $userid,
+        NOTES_STATE_SITE,
+        0
+    );
+    note_print_notes(
+        '<a name="coursenotes"></a>' . $strcoursenotes. ' ('.$fullname.')',
+        $addid,
+        $view,
+        $courseid,
+        $userid,
+        NOTES_STATE_PUBLIC,
+        0
+    );
+    note_print_notes(
+        '<a name="personalnotes"></a>' . $strpersonalnotes,
+        $addid,
+        $view,
+        $courseid,
+        $userid,
+        NOTES_STATE_DRAFT,
+        $USER->id
+    );
 
-} else {  // Normal course
-    //echo '<a href="#sitenotes">' . $strsitenotes . '</a> | <a href="#coursenotes">' . $strcoursenotes . '</a>';
+} else {  // Normal course.
     $view = has_capability('moodle/notes:view', context_system::instance());
     note_print_notes('<a name="sitenotes"></a>' . $strsitenotes, 0, $view, 0, $userid, NOTES_STATE_SITE, 0);
     echo '<a name="coursenotes"></a>';
 
     if (!empty($userid)) {
         $courses = enrol_get_users_courses($userid);
-        foreach($courses as $c) {
+        foreach ($courses as $c) {
             $ccontext = context_course::instance($c->id);
             $cfullname = format_string($c->fullname, true, array('context' => $ccontext));
             $header = '<a href="' . $CFG->wwwroot . '/course/view.php?id=' . $c->id . '">' . $cfullname . '</a>';
diff --git a/notes/lib.php b/notes/lib.php
index 45046a3537d..3071f601423 100644
--- a/notes/lib.php
+++ b/notes/lib.php
@@ -1,4 +1,18 @@
 <?php
+// This file is part of Moodle - http://moodle.org/
+//
+// Moodle is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// Moodle is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with Moodle.  If not, see <http://www.gnu.org/licenses/>.
 
 /**
  * Library of functions and constants for notes
@@ -34,7 +48,7 @@ define('NOTES_SHOW_FOOT', 0x04);
 function note_list($courseid=0, $userid=0, $state = '', $author = 0, $order='lastmodified DESC', $limitfrom=0, $limitnum=0) {
     global $DB;
 
-    // setup filters
+    // Setup filters.
     $selects = array();
     $params = array();
     if ($courseid) {
@@ -58,21 +72,21 @@ function note_list($courseid=0, $userid=0, $state = '', $author = 0, $order='las
 
     $select = implode(' AND ', $selects);
     $fields = 'id,courseid,userid,content,format,created,lastmodified,usermodified,publishstate';
-    // retrieve data
+
     return $DB->get_records_select('post', $select, $params, $order, $fields, $limitfrom, $limitnum);
 }
 
 /**
  * Retrieves a note object based on its id.
  *
- * @param int    $note_id id of the note to retrieve
+ * @param int $noteid ID of the note to retrieve
  * @return stdClass object
  */
-function note_load($note_id) {
+function note_load($noteid) {
     global $DB;
 
     $fields = 'id,courseid,userid,content,format,created,lastmodified,usermodified,publishstate';
-    return $DB->get_record('post', array('id'=>$note_id, 'module'=>'notes'), $fields);
+    return $DB->get_record('post', array('id' => $noteid, 'module' => 'notes'), $fields);
 }
 
 /**
@@ -171,7 +185,7 @@ function note_delete($note) {
  * @return string corespondent state name
  */
 function note_get_state_name($state) {
-    // cache state names
+    // Cache state names.
     static $states;
     if (empty($states)) {
         $states = note_get_state_names();
@@ -205,11 +219,11 @@ function note_get_state_names() {
 function note_print($note, $detail = NOTES_SHOW_FULL) {
     global $CFG, $USER, $DB, $OUTPUT;
 
-    if (!$user = $DB->get_record('user', array('id'=>$note->userid))) {
+    if (!$user = $DB->get_record('user', array('id' => $note->userid))) {
         debugging("User $note->userid not found");
         return;
     }
-    if (!$author = $DB->get_record('user', array('id'=>$note->usermodified))) {
+    if (!$author = $DB->get_record('user', array('id' => $note->usermodified))) {
         debugging("User $note->usermodified not found");
         return;
     }
@@ -217,18 +231,18 @@ function note_print($note, $detail = NOTES_SHOW_FULL) {
     $systemcontext = context_system::instance();
 
     $authoring = new stdClass();
-    $authoring->name = '<a href="'.$CFG->wwwroot.'/user/view.php?id='.$author->id.'&amp;course='.$note->courseid.'">'.fullname($author).'</a>';
+    $authoring->name = '<a href="' . $CFG->wwwroot . '/user/view.php?id=' . $author->id . '&amp;course='.$note->courseid . '">' . fullname($author) . '</a>';
     $authoring->date = userdate($note->lastmodified);
 
     echo '<div class="notepost '. $note->publishstate . 'notepost' .
         ($note->usermodified == $USER->id ? ' ownnotepost' : '')  .
-        '" id="note-'. $note->id .'">';
+        '" id="note-' . $note->id . '">';
 
-    // print note head (e.g. author, user refering to, etc)
+    // Print note head (e.g. author, user refering to, etc).
     if ($detail & NOTES_SHOW_HEAD) {
         echo '<div class="header">';
         echo '<div class="user">';
-        echo $OUTPUT->user_picture($user, array('courseid'=>$note->courseid));
+        echo $OUTPUT->user_picture($user, array('courseid' => $note->courseid));
         echo fullname($user) . '</div>';
         echo '<div class="info">' .
             get_string('bynameondate', 'notes', $authoring) .
@@ -236,20 +250,20 @@ function note_print($note, $detail = NOTES_SHOW_FULL) {
         echo '</div>';
     }
 
-    // print note content
+    // Print note content.
     if ($detail & NOTES_SHOW_BODY) {
         echo '<div class="content">';
-        echo format_text($note->content, $note->format, array('overflowdiv'=>true));
+        echo format_text($note->content, $note->format, array('overflowdiv' => true));
         echo '</div>';
     }
 
-    // print note options (e.g. delete, edit)
+    // Print note options (e.g. delete, edit).
     if ($detail & NOTES_SHOW_FOOT) {
         if (has_capability('moodle/notes:manage', $systemcontext) && $note->publishstate == NOTES_STATE_SITE ||
             has_capability('moodle/notes:manage', $context) && ($note->publishstate == NOTES_STATE_PUBLIC || $note->usermodified == $USER->id)) {
             echo '<div class="footer"><p>';
-            echo '<a href="'.$CFG->wwwroot.'/notes/edit.php?id='.$note->id. '">'. get_string('edit') .'</a> | ';
-            echo '<a href="'.$CFG->wwwroot.'/notes/delete.php?id='.$note->id. '">'. get_string('delete') .'</a>';
+            echo '<a href="' . $CFG->wwwroot . '/notes/edit.php?id=' . $note->id. '">' . get_string('edit') . '</a> | ';
+            echo '<a href="' . $CFG->wwwroot . '/notes/delete.php?id=' . $note->id. '">' . get_string('delete') . '</a>';
             echo '</p></div>';
         }
     }
@@ -264,7 +278,6 @@ function note_print($note, $detail = NOTES_SHOW_FULL) {
  */
 function note_print_list($notes, $detail = NOTES_SHOW_FULL) {
 
-    /// Start printing of the note
     echo '<div class="notelist">';
     foreach ($notes as $note) {
         note_print($note, $detail);
@@ -292,9 +305,9 @@ function note_print_notes($header, $addcourseid = 0, $viewnotes = true, $coursei
     }
     if ($addcourseid) {
         if ($userid) {
-           echo '<p><a href="'. $CFG->wwwroot .'/notes/edit.php?courseid=' . $addcourseid . '&amp;userid=' . $userid . '&amp;publishstate=' . $state . '">' . get_string('addnewnote', 'notes') . '</a></p>';
+            echo '<p><a href="' . $CFG->wwwroot . '/notes/edit.php?courseid=' . $addcourseid . '&amp;userid=' . $userid . '&amp;publishstate=' . $state . '">' . get_string('addnewnote', 'notes') . '</a></p>';
         } else {
-           echo '<p><a href="'. $CFG->wwwroot .'/user/index.php?id=' . $addcourseid. '">' . get_string('addnewnoteselect', 'notes') . '</a></p>';
+            echo '<p><a href="' . $CFG->wwwroot . '/user/index.php?id=' . $addcourseid. '">' . get_string('addnewnoteselect', 'notes') . '</a></p>';
         }
     }
     if ($viewnotes) {
@@ -306,7 +319,7 @@ function note_print_notes($header, $addcourseid = 0, $viewnotes = true, $coursei
         echo '<p>' . get_string('notesnotvisible', 'notes') . '</p>';
     }
     if ($header) {
-        echo '</div>';  // notesgroup
+        echo '</div>';  // The notesgroup div.
     }
 }
 
@@ -318,7 +331,7 @@ function note_print_notes($header, $addcourseid = 0, $viewnotes = true, $coursei
 function note_delete_all($courseid) {
     global $DB;
 
-    return $DB->delete_records('post', array('module'=>'notes', 'courseid'=>$courseid));
+    return $DB->delete_records('post', array('module' => 'notes', 'courseid' => $courseid));
 }
 
 /**
@@ -328,5 +341,5 @@ function note_delete_all($courseid) {
  * @param stdClass $currentcontext Current context of block
  */
 function note_page_type_list($pagetype, $parentcontext, $currentcontext) {
-    return array('notes-*'=>get_string('page-notes-x', 'notes'));
+    return array('notes-*' => get_string('page-notes-x', 'notes'));
 }