diff --git a/classes/output/renderer.php b/classes/output/renderer.php
index 36f7758..a7fdd3b 100644
--- a/classes/output/renderer.php
+++ b/classes/output/renderer.php
@@ -21,9 +21,7 @@
  * @copyright   2023 The Open University
  * @license     https://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
  */
-
-defined('MOODLE_INTERNAL') || die();
-
+
 /**
  * Generates the output for oumatrix questions.
  *
diff --git a/db/install.php b/db/install.php
index aa6d8c6..baf624b 100644
--- a/db/install.php
+++ b/db/install.php
@@ -17,12 +17,11 @@
 /**
  * Code to be executed after the plugin's database scheme has been installed is defined here.
  *
- * @package     qtype_oumatrix
- * @category    upgrade
- * @copyright   2023 The Open University
- * @license     https://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
+ * @package    qtype_oumatrix
+ * @copyright  2023 The Open University
+ * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
  */
-
+
 /**
  * Custom code to be run on installing the plugin.
  */
diff --git a/db/uninstall.php b/db/uninstall.php
index 3d6776f..b9ccaca 100644
--- a/db/uninstall.php
+++ b/db/uninstall.php
@@ -18,11 +18,10 @@
  * Code that is executed before the tables and data are dropped during the plugin uninstallation.
  *
  * @package     qtype_oumatrix
- * @category    upgrade
  * @copyright   2023 The Open University
  * @license     https://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
  */
-
+
 /**
  * Custom uninstallation procedure.
  */
diff --git a/db/upgrade.php b/db/upgrade.php
index 8348f03..ffaeb52 100644
--- a/db/upgrade.php
+++ b/db/upgrade.php
@@ -17,14 +17,13 @@
 /**
  * Plugin upgrade steps are defined here.
  *
- * @package     qtype_oumatrix
- * @category    upgrade
- * @copyright   2023 The Open University
- * @license     https://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
+ * @package    qtype_oumatrix
+ * @copyright  2023 The Open University
+ * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
  */
-
+
 defined('MOODLE_INTERNAL') || die();
-
+
 require_once(__DIR__.'/upgradelib.php');
 
 /**
diff --git a/db/upgradelib.php b/db/upgradelib.php
index 6db773a..78c61b1 100644
--- a/db/upgradelib.php
+++ b/db/upgradelib.php
@@ -18,11 +18,10 @@
  * Plugin upgrade helper functions are defined here.
  *
  * @package     qtype_oumatrix
- * @category    upgrade
  * @copyright   2023 The Open University
  * @license     https://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
  */
-
+
 /**
  * Helper function used by the upgrade.php file.
  */
diff --git a/lang/en/qtype_oumatrix.php b/lang/en/qtype_oumatrix.php
index 928e8c1..004a54d 100644
--- a/lang/en/qtype_oumatrix.php
+++ b/lang/en/qtype_oumatrix.php
@@ -29,7 +29,7 @@
 $string['answersingleno'] = 'Multiple response';
 $string['answersingleyes'] = 'Single choice';
 $string['grademethod'] = 'Marking mode';
-$string['grademethod_help'] = 'Standard (subpoints): each correct response in the body cells is worth one point, so students score a percentage of the total correct responses. 
+$string['grademethod_help'] = 'Standard (subpoints): each correct response in the body cells is worth one point, so students score a percentage of the total correct responses.
 
 All or nothing: students must get every response correct, otherwise they score zero.';
 $string['gradepartialcredit'] = 'Give partial credit';
diff --git a/question.php b/question.php
index 2f61f47..e6ff3db 100644
--- a/question.php
+++ b/question.php
@@ -22,8 +22,6 @@
  * @license     https://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
  */
 
-defined('MOODLE_INTERNAL') || die();
-
 // For a complete list of base question classes please examine the file
 // /question/type/questionbase.php.
 //
diff --git a/settings.php b/settings.php
index 902b8b2..7d3b5cf 100644
--- a/settings.php
+++ b/settings.php
@@ -18,13 +18,12 @@
  * Plugin administration pages are defined here.
  *
  * @package     qtype_oumatrix
- * @category    admin
  * @copyright   2023 The Open University
  * @license     https://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
  */
-
+
 defined('MOODLE_INTERNAL') || die();
-
+
 if ($hassiteconfig) {
     $settings = new admin_settingpage('qtype_oumatrix_settings', new lang_string('pluginname', 'qtype_oumatrix'));