diff --git a/classes/aggregator.php b/classes/aggregator.php
index f759108..4afc621 100644
--- a/classes/aggregator.php
+++ b/classes/aggregator.php
@@ -32,7 +32,7 @@ require_once($CFG->libdir.'/externallib.php');
  */
 abstract class aggregator {
     /** Fallback aggregator if method not found
-     * @var string 
+     * @var string
      * */
     private const FALLBACK = "core";
     /** @var string[] */
@@ -71,7 +71,7 @@ abstract class aggregator {
         ];
     }
 
-    
+
     /**
      * Create a new aggregatior object based on the specified method
      * @param mixed $method Aggregation method
@@ -89,7 +89,7 @@ abstract class aggregator {
     }
 
     /**
-     * Create a new aggregatior object based on the specified method, 
+     * Create a new aggregatior object based on the specified method,
      * but return a default aggregator if the method is not found
      * @param mixed $method Aggregation method
      * @param mixed $configstr Configuration string for aggregator
@@ -170,7 +170,7 @@ abstract class aggregator {
 
     /**
      * Determine if aggregation method makes use of required grades
-     * @return bool True if aggregation method makes use of 
+     * @return bool True if aggregation method makes use of
      */
     abstract public function use_item_conditions();
 
@@ -185,12 +185,12 @@ abstract class aggregator {
     /**
      * Return the current configuration string.
      * @return string Configuration string
-     */ 
+     */
     public function config_string() {
         return "";
     }
 
-    
+
     /**
      * Webservice structure for basic aggregator info
      * @param int $value Webservice requirement constant
diff --git a/classes/badgeinfo.php b/classes/badgeinfo.php
index 20b5bc2..a5e50db 100644
--- a/classes/badgeinfo.php
+++ b/classes/badgeinfo.php
@@ -48,6 +48,10 @@ class badgeinfo {
         $this->badge = $badge;
     }
 
+    /**
+     * Return full name
+     * @return string
+     */
     public function name() {
         return $this->badge->name;
     }
diff --git a/classes/cascadeusersync.php b/classes/cascadeusersync.php
index 6674cea..6e06823 100644
--- a/classes/cascadeusersync.php
+++ b/classes/cascadeusersync.php
@@ -47,7 +47,7 @@ class cascadeusersync {
         $this->studyplan = $studyplan;
     }
 
-    
+
     /**
      * Enroll all users associated to the studyplan in the courses linked to this studyplan
      */
diff --git a/classes/corecompletioninfo.php b/classes/corecompletioninfo.php
index 8f6337e..91ca216 100644
--- a/classes/corecompletioninfo.php
+++ b/classes/corecompletioninfo.php
@@ -44,7 +44,7 @@ class corecompletioninfo {
     /** @var \course_modinfo */
     private $modinfo;
 
-    /** 
+    /**
      * Cached dict of completion:: constants to equivalent webservice strings
      * @var array */
     private static $completionhandles = null;
diff --git a/classes/courseinfo.php b/classes/courseinfo.php
index e467856..42c37a3 100644
--- a/classes/courseinfo.php
+++ b/classes/courseinfo.php
@@ -14,7 +14,7 @@
 // You should have received a copy of the GNU General Public License
 // along with Moodle.  If not, see <https://www.gnu.org/licenses/>.
 /**
- *
+ * Class to process information about a course
  * @package    local_treestudyplan
  * @copyright  2023 P.M. Kuipers
  * @license    https://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
@@ -33,36 +33,70 @@ use \grade_item;
 use \grade_scale;
 use \grade_outcome;
 
+/**
+ * Class to process information about a course
+ */
 class courseinfo {
-    /** @var string */
+    /**
+     * Table name used in this class
+     * @var string */
     const TABLE = 'course';
 
+    /** @var stdClass */
     private $course;
+    /** @var \context */
     private $context;
+    /** @var \context */
     private $coursecontext;
+    /** @var studyitem */
     private $studyitem;
+    /** @var array */
     private static $contentitems = null;
 
+    /**
+     * Return database identifier
+     * @return int
+     */
     public function id() {
         return $this->course->id;
     }
 
+    /**
+     * Return short name
+     * @return string
+     */
     public function shortname() {
         return $this->course->shortname;
     }
 
+    /**
+     * Return course record
+     * @return stdClass
+     */
     public function course() {
-        return $this->course; // Php arrays are assigned by copy.
+        return $this->course;
     }
 
+    /**
+     * Return course context
+     * @return \context
+     */
     public function course_context() {
         return $this->coursecontext;
     }
 
+    /**
+     * Return course's category context
+     * @return \context
+     */
     public function category_context() {
         return $this->context;
     }
 
+    /**
+     * Get content items (activity icons) from the repository
+     * @return content_item[]
+     */
     protected function get_contentitems() {
         global $PAGE;
         if (empty(static::$contentitems)) {
@@ -72,11 +106,19 @@ class courseinfo {
         return static::$contentitems;
     }
 
-    protected function am_teacher() {
+    /**
+     * Check if current user is teacher in this course
+     * @return book
+     */
+    protected function am_teacher() : bool {
         global $USER;
         return is_enrolled($this->coursecontext, $USER, 'mod/assign:grade');
     }
 
+    /**
+     * Check if specified user can select gradables in this course
+     * @param int $userid User id to check for . Leave empty to check current user
+     */
     protected function i_can_select_gradables($userid = -1) {
         global $USER, $DB;
         if ($userid <= 0) {
@@ -87,6 +129,11 @@ class courseinfo {
         return($usr && is_enrolled($this->coursecontext, $usr, 'local/treestudyplan:selectowngradables'));
     }
 
+    /**
+     * Get specific contentitem (activity icons) by name
+     * @param mixed $name Name of content item
+     * @return content_item|null
+     */
     public static function get_contentitem($name) {
         $contentitems = static::get_contentitems();
         for ($i = 0; $i < count($contentitems); $i++) {
@@ -97,6 +144,11 @@ class courseinfo {
         return null;
     }
 
+    /**
+     * Construct courseinfo based on course id and 
+     * @param int $id Course id
+     * @param studyitem|null $studyitem Studyitem linking this course (if applicable)
+     */
     public function __construct($id, studyitem $studyitem = null) {
         global $DB;
         $this->studyitem = $studyitem;
@@ -105,17 +157,32 @@ class courseinfo {
         $this->coursecontext = \context_course::instance($this->course->id);
     }
 
+    /**
+     * Check if a course with the given ID exists
+     * @param int $id Course id
+     * @return bool
+     */
     public static function exists($id) {
         global $DB;
         return is_numeric($id) && $DB->record_exists(self::TABLE, ['id' => $id]);
     }
 
+    /**
+     * Find course id from shortname
+     * @param string $shortname Shortname of the course
+     * @return int Course id
+     */
     public static function id_from_shortname($shortname) {
         global $DB;
 
         return $DB->get_field(self::TABLE, "id", ['shortname' => $shortname]);
     }
 
+    /** 
+     * Determine course timing [future, present or past] based on a course date
+     * @param stdClass $course Course database record
+     * @return string 'future', 'present' or 'past'
+     */
     public static function coursetiming($course) {
         $now = time();
         if ($now > $course->startdate) {
@@ -129,10 +196,18 @@ class courseinfo {
         }
     }
 
+    /** 
+     * Determine course timing for this course [future, present or past]
+     * @return string 'future', 'present' or 'past'
+     */
     public function timing() {
         return self::coursetiming($this->course);
     }
 
+    /**
+     * Determine proper display name for this course based on config settings, custom fields etc...
+     * @return string Display name for the course
+     */
     public function displayname() {
         $displayfield = get_config("local_treestudyplan", "display_field");
         if ($displayfield == "idnumber") {
@@ -158,6 +233,11 @@ class courseinfo {
         return $this->course->shortname;
     }
 
+    /**
+     * Webservice structure for basic info
+     * @param int $value Webservice requirement constant
+     * @return external_single_structure Webservice output structure
+     */
     public static function simple_structure($value = VALUE_REQUIRED) {
         return new \external_single_structure([
             "id" => new \external_value(PARAM_INT, 'linked course id'),
@@ -168,6 +248,10 @@ class courseinfo {
         ], 'referenced course information', $value);
     }
 
+     /**
+     * Webservice model for basic info
+     * @return array Webservice data model
+     */
     public function simple_model() {
         $contextinfo = new contextinfo($this->context);
         $info = [
@@ -209,6 +293,8 @@ class courseinfo {
 
     /**
      * Webservice model for editor info
+     * @param studyitem $studyitem Specify a specific study item to check gradable selections for. Leave empty to use default
+     * @param bool $usecorecompletioninfo Whether to use corecompletion info instead of custom selected gradables
      * @return array Webservice data model
      */
     public function editor_model(studyitem $studyitem = null, $usecorecompletioninfo = false) {
@@ -235,10 +321,10 @@ class courseinfo {
         ];
 
         if (!$usecorecompletioninfo) {
-            $gradables = gradeinfo::list_course_gradables($this->course, $studyitem);
+            $gradables = gradeinfo::list_course_gradables($this->course, $studyitem ? $studyitem : $this->studyitem );
 
             foreach ($gradables as $gradable) {
-                $info['grades'][] = $gradable->editor_model($studyitem);
+                $info['grades'][] = $gradable->editor_model($studyitem ? $studyitem : $this->studyitem);
             }
         } else {
             $cc = new corecompletioninfo($this->course);
@@ -272,6 +358,7 @@ class courseinfo {
     /**
      * Webservice model for user info
      * @param int $userid ID of user to check specific info for
+     * @param bool $usecorecompletioninfo Whether to use corecompletion info instead of custom selected gradables
      * @return array Webservice data model
      */
     public function user_model($userid, $usecorecompletioninfo = false) {
diff --git a/classes/courseservice.php b/classes/courseservice.php
index 62d50ba..a1c0ef1 100644
--- a/classes/courseservice.php
+++ b/classes/courseservice.php
@@ -381,9 +381,9 @@ class courseservice extends \external_api {
     }
 
     /**************************************
-     * 
+     *
      * Progress scanners for teacherview
-     * 
+     *
      **************************************/
 
     /**
@@ -408,7 +408,7 @@ class courseservice extends \external_api {
 
     /**
      * Scan grade item for progress statistics
-     * @param mixed $gradeitemid Grade item id 
+     * @param mixed $gradeitemid Grade item id
      * @param mixed $studyplanid Id of studyitem the grade is selected in
      * @return array
      */
@@ -499,7 +499,7 @@ class courseservice extends \external_api {
     }
 
     /**
-     * Scan badge for completion progress statistica 
+     * Scan badge for completion progress statistica
      * @param mixed $badgeid ID of the badge
      * @param mixed $studyplanid ID of the relevant study plan
      * @return array
diff --git a/classes/gradeinfo.php b/classes/gradeinfo.php
index 38190f2..bfabf58 100644
--- a/classes/gradeinfo.php
+++ b/classes/gradeinfo.php
@@ -93,7 +93,7 @@ class gradeinfo {
 
     /**
      * Get the grade_item
-     * @return grade_item 
+     * @return grade_item
      */
     public function get_gradeitem() : grade_item {
         return $this->gradeitem;
@@ -102,7 +102,7 @@ class gradeinfo {
      * Get the gradingscanner
      * @return gradingscanner
      */
-    public function get_gradingscanner() : gradingscanner{
+    public function get_gradingscanner() : gradingscanner {
         return $this->gradingscanner;
     }
 
@@ -110,7 +110,7 @@ class gradeinfo {
      * Get the grade's scale if applicable
      * @return grade_scale|null
      */
-    public function get_scale() : ?grade_scale{
+    public function get_scale() : ?grade_scale {
         return $this->scale;
     }
 
@@ -157,7 +157,7 @@ class gradeinfo {
     }
 
     /**
-     * Create new object around a grade_item 
+     * Create new object around a grade_item
      * @param int $id Grade item id of the grade item to use as base
      * @param studyitem|null $studyitem Studyitem containg the course that references this grade
      */
@@ -332,7 +332,7 @@ class gradeinfo {
 
     /**
      * Webservice model for user info
-	 * @param int $userid ID of user to check specific info for
+     * @param int $userid ID of user to check specific info for
      * @return array Webservice data model
      */
     public function user_model($userid) {
@@ -468,7 +468,7 @@ class gradeinfo {
      * @param studyitem $studyitem The studyitem to search for
      * @return self[] Array of gradeinfo
      */
-    public static function list_studyitem_gradables(studyitem $studyitem) : array{
+    public static function list_studyitem_gradables(studyitem $studyitem) : array {
         global $DB;
         $table = 'local_treestudyplan_gradeinc';
         $list = [];
@@ -494,7 +494,7 @@ class gradeinfo {
         return $list;
     }
 
-    
+
     /**
      * Webservice executor to include grade with studyitem or not.
      * if both $inclue and $required are false, any existing DB record will be removed
@@ -502,7 +502,7 @@ class gradeinfo {
      * @param int $itemid ID of the study item
      * @param bool $include Select grade_item for studyitem or not
      * @param bool $required Mark grade_item as required or not
-     * @return success Always returns successful success object 
+     * @return success Always returns successful success object
      */
     public static function include_grade(int $gradeid, int $itemid, bool $include, bool $required = false) {
         global $DB;
diff --git a/classes/local/aggregators/bistate_aggregator.php b/classes/local/aggregators/bistate_aggregator.php
index 2e686e8..66d26b7 100644
--- a/classes/local/aggregators/bistate_aggregator.php
+++ b/classes/local/aggregators/bistate_aggregator.php
@@ -104,7 +104,7 @@ class bistate_aggregator extends \local_treestudyplan\aggregator {
     /**
      * Return the current configuration string.
      * @return string Configuration string
-     */ 
+     */
     public function config_string() {
         return json_encode([
             "thresh_excellent" => 100 * $this->cfg()->thresh_excellent,
@@ -141,7 +141,7 @@ class bistate_aggregator extends \local_treestudyplan\aggregator {
 
     /**
      * Determine if aggregation method makes use of required grades
-     * @return bool True if aggregation method makes use of 
+     * @return bool True if aggregation method makes use of
      */
     public function use_item_conditions() {
         return false;
diff --git a/classes/local/aggregators/core_aggregator.php b/classes/local/aggregators/core_aggregator.php
index f87f393..9dd922f 100644
--- a/classes/local/aggregators/core_aggregator.php
+++ b/classes/local/aggregators/core_aggregator.php
@@ -85,7 +85,7 @@ class core_aggregator extends \local_treestudyplan\aggregator {
     /**
      * Return the current configuration string.
      * @return string Configuration string
-     */ 
+     */
     public function config_string() {
         return json_encode([
             "accept_pending_as_submitted" => $this->cfg()->accept_pending_as_submitted,
@@ -118,7 +118,7 @@ class core_aggregator extends \local_treestudyplan\aggregator {
 
     /**
      * Determine if aggregation method makes use of required grades
-     * @return bool True if aggregation method makes use of 
+     * @return bool True if aggregation method makes use of
      */
     public function use_item_conditions() {
         return false;
@@ -225,7 +225,7 @@ class core_aggregator extends \local_treestudyplan\aggregator {
         }
     }
 
-    
+
     /**
      * Determine completion for a single grade and user
      * @param gradeinfo $gradeinfo Gradeinfo object for grade to check
@@ -233,8 +233,8 @@ class core_aggregator extends \local_treestudyplan\aggregator {
      * @return int Aggregated completion as completion class constant
      */
     public function grade_completion(gradeinfo $gradeinfo, $userid) {
-        // CORE COMPLETION DOESN'T REALLY USE THIS FUNCTION
-        
+        // CORE COMPLETION DOESN'T REALLY USE THIS FUNCTION.
+
         global $DB;
         $table = "local_treestudyplan_gradecfg";
         $gradeitem = $gradeinfo->get_gradeitem();
diff --git a/classes/local/aggregators/tristate_aggregator.php b/classes/local/aggregators/tristate_aggregator.php
index 1cc81da..09801e9 100644
--- a/classes/local/aggregators/tristate_aggregator.php
+++ b/classes/local/aggregators/tristate_aggregator.php
@@ -62,7 +62,7 @@ class tristate_aggregator extends \local_treestudyplan\aggregator {
 
     /**
      * Determine if aggregation method makes use of required grades
-     * @return bool True if aggregation method makes use of 
+     * @return bool True if aggregation method makes use of
      */
     public function use_item_conditions() {
         return true;
diff --git a/classes/local/gradegenerator.php b/classes/local/gradegenerator.php
index ac8a537..79f0e9b 100644
--- a/classes/local/gradegenerator.php
+++ b/classes/local/gradegenerator.php
@@ -117,7 +117,7 @@ class gradegenerator {
 
     }
 
-    /** 
+    /**
      * Register a new student in the skill table
      * @param string $student Student identifier
      */
@@ -132,7 +132,7 @@ class gradegenerator {
     }
 
     /**
-     * Add a specific skill for a student 
+     * Add a specific skill for a student
      * @param string $student Student identifier
      * @param string $skill Skill identifier
      */
@@ -160,7 +160,7 @@ class gradegenerator {
         $this->table[$student]["lastname"] = $lastname;
     }
 
-    /** 
+    /**
      * Generate a number of random results for a given student and skill
      * @param string $student Student identifier
      * @param string $skill Skill identifier
@@ -206,7 +206,7 @@ class gradegenerator {
     }
 
     /**
-     * Generate results for a number of gradeinfo 
+     * Generate results for a number of gradeinfo
      * Returns (object)[ "gi" => <gradeinfo object>,
      *                   "grade" => <randomized grade>
      *                   "fb" => <randomized feedback>
diff --git a/classes/local/ungradedscanners/assign_scanner.php b/classes/local/ungradedscanners/assign_scanner.php
index b1307eb..ed0ae85 100644
--- a/classes/local/ungradedscanners/assign_scanner.php
+++ b/classes/local/ungradedscanners/assign_scanner.php
@@ -59,7 +59,7 @@ class assign_scanner extends scanner_base {
         return $DB->get_fieldset_sql($sql, ['iteminstance' => $this->gi->iteminstance]);
     }
 
-   /**
+    /**
      * Count the number of students wit ungraded submissions in this activity
      * @param array $courseuserids
      * @return int Number of students with ungraded submissions
diff --git a/classes/period.php b/classes/period.php
index b6e6586..735a976 100644
--- a/classes/period.php
+++ b/classes/period.php
@@ -32,7 +32,7 @@ class period {
     private static $pagecache = [];
 
     /**
-     * Holds database record 
+     * Holds database record
      * @var stdClass
      */
     private $r; // Holds database record.
@@ -130,6 +130,10 @@ class period {
         $this->page = studyplanpage::find_by_id($this->r->page_id);
     }
 
+    /**
+     * Return database identifier
+     * @return int
+     */
     public function id() {
         return $this->id;
     }
@@ -142,10 +146,18 @@ class period {
         return $this->page;
     }
 
+    /**
+     * Return short name
+     * @return string
+     */
     public function shortname() {
         return $this->r->shortname;
     }
 
+    /**
+     * Return full name
+     * @return string
+     */
     public function fullname() {
         return $this->r->fullname;
     }
diff --git a/classes/reportinvite_form.php b/classes/reportinvite_form.php
index 715b772..b3c021f 100644
--- a/classes/reportinvite_form.php
+++ b/classes/reportinvite_form.php
@@ -26,7 +26,7 @@ require_once("$CFG->libdir/formslib.php");
 require_once("$CFG->dirroot/local/treestudyplan/lib.php");
 
 /**
-* Form to edit invitations to view the user's studyplans
+ * Form to edit invitations to view the user's studyplans
  */
 class reportinvite_form extends moodleform {
     // Add elements to form.
@@ -60,8 +60,8 @@ class reportinvite_form extends moodleform {
 
         $this->add_action_buttons();
     }
-    
-    /** 
+
+    /**
      * Custom validation should be added here.
      * @param array $data Supplied user data
      * @param array $files Any uploaded files
diff --git a/classes/studyitem.php b/classes/studyitem.php
index 842e77b..e6e58b6 100644
--- a/classes/studyitem.php
+++ b/classes/studyitem.php
@@ -39,7 +39,7 @@ class studyitem {
 
     private static $studyitemcache = [];
     /**
-     * Holds database record 
+     * Holds database record
      * @var stdClass
      */
     private $r; // Holds database record.
@@ -52,6 +52,11 @@ class studyitem {
     /** @var aggragator */
     private $aggregator;
 
+
+    /**
+     * Return the context the studyplan is associated to
+     * @return \context
+     */
     public function context(): \context {
         return $this->studyline->context();
     }
@@ -80,6 +85,10 @@ class studyitem {
         $this->aggregator = $this->studyline()->studyplan()->aggregator();
     }
 
+    /**
+     * Return database identifier
+     * @return int
+     */
     public function id() {
         return $this->id;
     }
diff --git a/classes/studyitemconnection.php b/classes/studyitemconnection.php
index 5602bcf..86bb89a 100644
--- a/classes/studyitemconnection.php
+++ b/classes/studyitemconnection.php
@@ -31,12 +31,12 @@ require_once($CFG->libdir.'/externallib.php');
 class studyitemconnection {
 
     /**
-     * Database table for this model 
+     * Database table for this model
      * @var string */
     const TABLE = "local_treestudyplan_connect";
 
     /**
-     * Holds database record 
+     * Holds database record
      * @var stdClass
      */
     private $r;
diff --git a/classes/studyline.php b/classes/studyline.php
index 77015cc..d650750 100644
--- a/classes/studyline.php
+++ b/classes/studyline.php
@@ -48,7 +48,7 @@ class studyline {
     private static $studylinecache = [];
 
     /**
-     * Holds database record 
+     * Holds database record
      * @var stdClass
      */
     private $r; // Holds database record.
@@ -59,6 +59,11 @@ class studyline {
     /** @var studyplan*/
     private $studyplan;
 
+
+    /**
+     * Return the context the studyplan is associated to
+     * @return \context
+     */
     public function context(): \context {
         return $this->studyplan->context();
     }
@@ -86,10 +91,18 @@ class studyline {
         $this->studyplan = $this->page->studyplan();
     }
 
+    /**
+     * Return database identifier
+     * @return int
+     */
     public function id() {
         return $this->id;
     }
 
+    /**
+     * Return full name
+     * @return string
+     */
     public function name() {
         return $this->r->name;
     }
diff --git a/classes/studyplan.php b/classes/studyplan.php
index aae6d29..4bca67b 100644
--- a/classes/studyplan.php
+++ b/classes/studyplan.php
@@ -32,7 +32,7 @@ class studyplan {
     private static $studyplancache = [];
 
     /**
-     * Holds database record 
+     * Holds database record
      * @var stdClass
      */
     private $r; // Holds database record.
@@ -65,14 +65,26 @@ class studyplan {
         $this->aggregator = aggregator::create_or_default($this->r->aggregation, $this->r->aggregation_config);
     }
 
+    /**
+     * Return database identifier
+     * @return int
+     */
     public function id() {
         return $this->id;
     }
 
+    /**
+     * Return short name
+     * @return string
+     */
     public function shortname() {
         return $this->r->shortname;
     }
 
+    /**
+     * Return full name
+     * @return string
+     */
     public function name() {
         return $this->r->name;
     }
@@ -88,7 +100,8 @@ class studyplan {
     }
 
     /**
-     * Return the context this studyplan is associated to
+     * Return the context the studyplan is associated to
+     * @return \context
      */
     public function context(): \context {
         if (!isset($this->context)) {
@@ -103,6 +116,11 @@ class studyplan {
         return $this->context;
     }
 
+    /**
+     * Webservice structure for basic info
+     * @param int $value Webservice requirement constant
+     * @return external_single_structure Webservice output structure
+     */
     public static function simple_structure($value = VALUE_REQUIRED) {
         return new \external_single_structure([
             "id" => new \external_value(PARAM_INT, 'id of studyplan'),
@@ -118,6 +136,10 @@ class studyplan {
         ], 'Basic studyplan info', $value);
     }
 
+     /**
+     * Webservice model for basic info
+     * @return array Webservice data model
+     */
     public function simple_model() {
         $pages = [];
         foreach ($this->pages() as $p) {
@@ -559,7 +581,7 @@ class studyplan {
     }
 
     /**
-     * Export all pages 
+     * Export all pages
      * @return array information model
      */
     public function export_pages_model() {
diff --git a/classes/studyplanpage.php b/classes/studyplanpage.php
index 0837555..2eb5434 100644
--- a/classes/studyplanpage.php
+++ b/classes/studyplanpage.php
@@ -32,7 +32,7 @@ class studyplanpage {
     private static $cache = [];
 
     /**
-     * Holds database record 
+     * Holds database record
      * @var stdClass
      */
     private $r; // Holds database record.
@@ -60,6 +60,10 @@ class studyplanpage {
         $this->studyplan = studyplan::find_by_id($this->r->studyplan_id);
     }
 
+    /**
+     * Return database identifier
+     * @return int
+     */
     public function id() {
         return $this->id;
     }
@@ -68,6 +72,10 @@ class studyplanpage {
         return $this->studyplan;
     }
 
+    /**
+     * Return short name
+     * @return string
+     */
     public function shortname() {
         return $this->r->shortname;
     }
@@ -76,6 +84,10 @@ class studyplanpage {
         return $this->r->periods;
     }
 
+    /**
+     * Return full name
+     * @return string
+     */
     public function fullname() {
         return $this->r->fullname;
     }
@@ -94,6 +106,11 @@ class studyplanpage {
 
     }
 
+    /**
+     * Webservice structure for basic info
+     * @param int $value Webservice requirement constant
+     * @return external_single_structure Webservice output structure
+     */
     public static function simple_structure($value = VALUE_REQUIRED) {
         return new \external_single_structure([
             "id" => new \external_value(PARAM_INT, 'id of studyplan page'),
@@ -107,6 +124,10 @@ class studyplanpage {
         ], 'Studyplan page basic info', $value);
     }
 
+     /**
+     * Webservice model for basic info
+     * @return array Webservice data model
+     */
     public function simple_model() {
         return [
             'id' => $this->r->id,
diff --git a/classes/success.php b/classes/success.php
index d8c9ae4..b9d801d 100644
--- a/classes/success.php
+++ b/classes/success.php
@@ -14,7 +14,7 @@
 // You should have received a copy of the GNU General Public License
 // along with Moodle.  If not, see <https://www.gnu.org/licenses/>.
 /**
- * Webservice return value to describe a single event as successful or not 
+ * Webservice return value to describe a single event as successful or not
  * @package    local_treestudyplan
  * @copyright  2023 P.M. Kuipers
  * @license    https://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
@@ -68,7 +68,7 @@ class success {
 
     /**
      * Describe the result for the webservice model
-     * @return external_single_structure 
+     * @return external_single_structure
      */
     public static function structure() {
         return new \external_single_structure([
diff --git a/classes/task/autocohortsync.php b/classes/task/autocohortsync.php
index 3a4bfd1..916db34 100644
--- a/classes/task/autocohortsync.php
+++ b/classes/task/autocohortsync.php
@@ -29,7 +29,7 @@ use local_treestudyplan\cascadecohortsync;
 use local_treestudyplan\cascadeusersync;
 
 /**
- * Task to enrol users and cohorts associated with a studyplan in all courses linked in that studyplan 
+ * Task to enrol users and cohorts associated with a studyplan in all courses linked in that studyplan
  */
 class autocohortsync extends \core\task\scheduled_task {
 
diff --git a/classes/task/refreshteacherlist.php b/classes/task/refreshteacherlist.php
index 68e7587..af02c73 100644
--- a/classes/task/refreshteacherlist.php
+++ b/classes/task/refreshteacherlist.php
@@ -27,7 +27,7 @@ require_once($CFG->dirroot.'/course/externallib.php');
 use local_treestudyplan\teachingfinder;
 
 /**
- * Background task to refresh the list of associaded teachers with studyplans 
+ * Background task to refresh the list of associaded teachers with studyplans
  */
 class refreshteacherlist extends \core\task\scheduled_task {
     /**
diff --git a/classes/teachingfinder.php b/classes/teachingfinder.php
index 26bcf0a..6abc249 100644
--- a/classes/teachingfinder.php
+++ b/classes/teachingfinder.php
@@ -26,7 +26,7 @@ namespace local_treestudyplan;
  * Class to find and cache which studyplans a teacher is teaching courses in
  */
 class teachingfinder {
-    /** 
+    /**
      * Table name used for caching teacher info
      * @var string
      */
diff --git a/cli/randomize_grades.php b/cli/randomize_grades.php
index 9ccc1eb..3ac1722 100644
--- a/cli/randomize_grades.php
+++ b/cli/randomize_grades.php
@@ -14,7 +14,7 @@
 // You should have received a copy of the GNU General Public License
 // along with Moodle.  If not, see <https://www.gnu.org/licenses/>.
 /**
-* Developer CLI tool. Fill all the gradables in a study plan with random values
+ * Developer CLI tool. Fill all the gradables in a study plan with random values
  * @package    local_treestudyplan
  * @copyright  2023 P.M. Kuipers
  * @license    https://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
diff --git a/db/upgrade.php b/db/upgrade.php
index 0fb2e2f..f02fbaf 100644
--- a/db/upgrade.php
+++ b/db/upgrade.php
@@ -24,7 +24,7 @@
  * Hook to upgrade database upon plugin upgrade
  * @param mixed $oldversion Version of plugin database before upgrade
  * @return bool Upgrade success status
- * 
+ *
  */
 function xmldb_local_treestudyplan_upgrade($oldversion) {
     global $DB;
diff --git a/lib.php b/lib.php
index 07cd3a0..7d5304c 100644
--- a/lib.php
+++ b/lib.php
@@ -192,8 +192,8 @@ function local_treestudyplan_extend_navigation_category_settings($navigation, co
 
 /**
  * Map fontawesome icons for use in flat navigation
- * @return array Icon mapping 
- * 
+ * @return array Icon mapping
+ *
  */
 function local_treestudyplan_get_fontawesome_icon_map() {
 
@@ -223,7 +223,7 @@ function local_treestudyplan_reset_fontawesome_icon_map() {
 /**
  * Send invitation to invited person
  * @param mixed $inviteid Database id of the invitation
- * 
+ *
  */
 function local_treestudyplan_send_invite($inviteid) {
     global $DB, $USER, $CFG;
@@ -285,7 +285,7 @@ function local_treestudyplan_send_invite($inviteid) {
 
 /**
  * Hook to display fragment of activity/mod settings editor. Used in feature to edit name and description of activity
- * @param mixed $args 
+ * @param mixed $args
  * @return string Rendered form output HTML
  */
 function local_treestudyplan_output_fragment_mod_edit_form($args) {
diff --git a/scss/readme-moodle.txt b/scss/readme-moodle.txt
index aa92257..d15b56f 100644
--- a/scss/readme-moodle.txt
+++ b/scss/readme-moodle.txt
@@ -16,5 +16,3 @@ production environments, the compiler will compile it into both css/devstyles.cs
 and styles.css
 
 The grunt command to compile is 'grunt scssplugin'
-
-