diff --git a/lib/upgrade.txt b/lib/upgrade.txt
index 60b2b8c2708..c76c1720919 100644
--- a/lib/upgrade.txt
+++ b/lib/upgrade.txt
@@ -1,6 +1,10 @@
 This files describes API changes in core libraries and APIs,
 information provided here is intended especially for developers.
 
+=== 4.0 ===
+* New optional parameter $extracontent for print_collapsible_region_start(). This allows developers to add interactive HTML elements
+  (e.g. a help icon) after the collapsible region's toggle link.
+
 === 3.10 ===
 * PHPUnit has been upgraded to 8.5. That comes with a few changes:
   - Breaking change: All the "template methods" (setUp(), tearDown()...) now require to return void. This implies
diff --git a/lib/weblib.php b/lib/weblib.php
index 42518461eb6..a2ba0c34d91 100644
--- a/lib/weblib.php
+++ b/lib/weblib.php
@@ -2441,9 +2441,11 @@ function print_collapsible_region($contents, $classes, $id, $caption, $userpref
  *      (May be blank if you do not wish the state to be persisted.
  * @param boolean $default Initial collapsed state to use if the user_preference it not set.
  * @param boolean $return if true, return the HTML as a string, rather than printing it.
+ * @param string $extracontent the extra content will show next to caption, eg.Help icon.
  * @return string|void if $return is false, returns nothing, otherwise returns a string of HTML.
  */
-function print_collapsible_region_start($classes, $id, $caption, $userpref = '', $default = false, $return = false) {
+function print_collapsible_region_start($classes, $id, $caption, $userpref = '', $default = false, $return = false,
+        $extracontent = null) {
     global $PAGE;
 
     // Work out the initial state.
@@ -2463,8 +2465,11 @@ function print_collapsible_region_start($classes, $id, $caption, $userpref = '',
     $output .= '<div id="' . $id . '" class="collapsibleregion ' . $classes . '">';
     $output .= '<div id="' . $id . '_sizer">';
     $output .= '<div id="' . $id . '_caption" class="collapsibleregioncaption">';
-    $output .= $caption . ' ';
-    $output .= '</div><div id="' . $id . '_inner" class="collapsibleregioninner">';
+    $output .= $caption . ' </div>';
+    if ($extracontent) {
+        $output .= html_writer::div($extracontent, 'collapsibleregionextracontent');
+    }
+    $output .= '<div id="' . $id . '_inner" class="collapsibleregioninner">';
     $PAGE->requires->js_init_call('M.util.init_collapsible_region', array($id, $userpref, get_string('clicktohideshow')));
 
     if ($return) {
diff --git a/question/preview.php b/question/preview.php
index ff2346c5a84..0d2e0192e00 100644
--- a/question/preview.php
+++ b/question/preview.php
@@ -266,9 +266,8 @@ echo html_writer::end_tag('div');
 echo html_writer::end_tag('form');
 
 // Output the technical info.
-print_collapsible_region_start('', 'techinfo', get_string('technicalinfo', 'question') .
-        $OUTPUT->help_icon('technicalinfo', 'question'),
-        'core_question_preview_techinfo_collapsed', true);
+print_collapsible_region_start('', 'techinfo', get_string('technicalinfo', 'question'),
+        'core_question_preview_techinfo_collapsed', true, false, $OUTPUT->help_icon('technicalinfo', 'question'));
 foreach ($technical as $info) {
     echo html_writer::tag('p', $info, array('class' => 'notifytiny'));
 }
diff --git a/theme/boost/scss/moodle/question.scss b/theme/boost/scss/moodle/question.scss
index 06e97bfbffb..ea0931a26b7 100644
--- a/theme/boost/scss/moodle/question.scss
+++ b/theme/boost/scss/moodle/question.scss
@@ -423,6 +423,13 @@ body.jsenabled .questionflag input[type=checkbox] {
     margin: 1em 0;
 }
 
+#page-question-preview .collapsibleregion {
+    .collapsibleregioncaption,
+    .collapsibleregionextracontent {
+        display: inline-block;
+    }
+}
+
 // imported from quiz.css
 
 #page-mod-quiz-edit ul.slots .activityinstance {
diff --git a/theme/boost/style/moodle.css b/theme/boost/style/moodle.css
index 5379e2f690f..59d3819984c 100644
--- a/theme/boost/style/moodle.css
+++ b/theme/boost/style/moodle.css
@@ -15820,6 +15820,10 @@ body.jsenabled .questionflag input[type=checkbox] {
 #page-question-preview #techinfo {
   margin: 1em 0; }
 
+#page-question-preview .collapsibleregion .collapsibleregioncaption,
+#page-question-preview .collapsibleregion .collapsibleregionextracontent {
+  display: inline-block; }
+
 #page-mod-quiz-edit ul.slots .activityinstance > a {
   display: flex;
   max-width: 100%;
diff --git a/theme/classic/style/moodle.css b/theme/classic/style/moodle.css
index 5fd375cfde5..56c28d1ad9d 100644
--- a/theme/classic/style/moodle.css
+++ b/theme/classic/style/moodle.css
@@ -16041,6 +16041,10 @@ body.jsenabled .questionflag input[type=checkbox] {
 #page-question-preview #techinfo {
   margin: 1em 0; }
 
+#page-question-preview .collapsibleregion .collapsibleregioncaption,
+#page-question-preview .collapsibleregion .collapsibleregionextracontent {
+  display: inline-block; }
+
 #page-mod-quiz-edit ul.slots .activityinstance > a {
   display: flex;
   max-width: 100%;