diff --git a/db/install.xml b/db/install.xml
index 5a686ff..68fd481 100644
--- a/db/install.xml
+++ b/db/install.xml
@@ -1,11 +1,13 @@
 <?xml version="1.0" encoding="UTF-8" ?>
-<XMLDB PATH="mod/exp360/db" VERSION="2024070500" COMMENT="exp360 module">
+<XMLDB PATH="mod/exp360/db" VERSION="2024070503" COMMENT="exp360 module description">
     <TABLES>
-        <TABLE NAME="exp360" COMMENT="Table containing data on exp360 activities">
+        <TABLE NAME="exp360" COMMENT="Table for storing exp360 activity instances">
             <FIELDS>
                 <FIELD NAME="id" TYPE="int" LENGTH="10" NOTNULL="true" SEQUENCE="true" COMMENT="Primary key"/>
                 <FIELD NAME="course" TYPE="int" LENGTH="10" NOTNULL="true" COMMENT="Course ID"/>
                 <FIELD NAME="name" TYPE="char" LENGTH="255" NOTNULL="true" COMMENT="Activity name"/>
+                <FIELD NAME="intro" TYPE="text" NOTNULL="false" COMMENT="Introduction text"/>
+                <FIELD NAME="introformat" TYPE="int" LENGTH="4" NOTNULL="true" DEFAULT="0" COMMENT="Format of the intro field (e.g., HTML)"/>
                 <FIELD NAME="content_id" TYPE="char" LENGTH="255" NOTNULL="true" COMMENT="Content ID"/>
                 <FIELD NAME="timemodified" TYPE="int" LENGTH="10" NOTNULL="true" COMMENT="Last modified time"/>
             </FIELDS>
diff --git a/db/upgrade.php b/db/upgrade.php
new file mode 100644
index 0000000..2217f52
--- /dev/null
+++ b/db/upgrade.php
@@ -0,0 +1,33 @@
+<?php
+
+defined('MOODLE_INTERNAL') || die();
+
+function xmldb_exp360_upgrade($oldversion) {
+    global $DB;
+
+    $dbman = $DB->get_manager();
+
+    if ($oldversion < 2024070503) {
+        // Define field intro to be added to exp360.
+        $table = new xmldb_table('exp360');
+        $field = new xmldb_field('intro', XMLDB_TYPE_TEXT, null, null, null, null, null, 'name');
+
+        // Conditionally launch add field intro.
+        if (!$dbman->field_exists($table, $field)) {
+            $dbman->add_field($table, $field);
+        }
+
+        // Define field introformat to be added to exp360.
+        $field = new xmldb_field('introformat', XMLDB_TYPE_INTEGER, '4', null, XMLDB_NOTNULL, null, '0', 'intro');
+
+        // Conditionally launch add field introformat.
+        if (!$dbman->field_exists($table, $field)) {
+            $dbman->add_field($table, $field);
+        }
+
+        // Exp360 savepoint reached.
+        upgrade_mod_savepoint(true, 2024070503, 'exp360');
+    }
+
+    return true;
+}
\ No newline at end of file
diff --git a/lib.php b/lib.php
index 036183a..5463d01 100644
--- a/lib.php
+++ b/lib.php
@@ -9,6 +9,10 @@ function exp360_add_instance($exp360)
     $exp360->timemodified = time();
     $exp360->timecreated = time();
 
+    // Process standard intro fields.
+    $exp360->introformat = FORMAT_HTML;
+    $exp360->intro = '';
+
     return $DB->insert_record('exp360', $exp360);
 }
 
@@ -19,6 +23,10 @@ function exp360_update_instance($exp360)
     $exp360->timemodified = time();
     $exp360->id = $exp360->instance;
 
+    // Process standard intro fields.
+    $exp360->introformat = FORMAT_HTML;
+    $exp360->intro = '';
+
     return $DB->update_record('exp360', $exp360);
 }
 
diff --git a/mod_form.php b/mod_form.php
index 49e7b85..edc10e6 100644
--- a/mod_form.php
+++ b/mod_form.php
@@ -2,8 +2,10 @@
 
 require_once("$CFG->dirroot/course/moodleform_mod.php");
 
-class mod_exp360_mod_form extends moodleform_mod {
-    public function definition() {
+class mod_exp360_mod_form extends moodleform_mod
+{
+    public function definition()
+    {
         $mform = $this->_form;
 
         $mform->addElement('header', 'general', get_string('general', 'form'));
@@ -13,6 +15,7 @@ class mod_exp360_mod_form extends moodleform_mod {
         $mform->addRule('name', null, 'required', null, 'client');
         $mform->addRule('name', null, 'maxlength', 255, 'client');
 
+        // Add the standard intro elements.
         $this->standard_intro_elements();
 
         $mform->addElement('text', 'content_id', get_string('contentid', 'exp360'), array('size' => '64'));
@@ -23,4 +26,4 @@ class mod_exp360_mod_form extends moodleform_mod {
 
         $this->add_action_buttons();
     }
-}
\ No newline at end of file
+}
diff --git a/version.php b/version.php
index 273d0e3..1acdb34 100644
--- a/version.php
+++ b/version.php
@@ -2,6 +2,6 @@
 
 defined('MOODLE_INTERNAL') || die();
 
-$plugin->version   = 2024070502; // The current module version (Date: YYYYMMDDXX)
+$plugin->version   = 2024070503; // The current module version (Date: YYYYMMDDXX)
 $plugin->requires  = 2021051700; // Requires this Moodle version
 $plugin->component = 'mod_exp360'; // Full name of the plugin (used for diagnostics)
\ No newline at end of file