diff --git a/lib.php b/lib.php
index 5969519..5c4bbb8 100644
--- a/lib.php
+++ b/lib.php
@@ -206,4 +206,36 @@ public function get_config_for_external() {
         // Return everything (nothing to hide).
         return $this->get_format_options();
     }
+
+    /**
+     * Whether this format allows to delete sections.
+     *
+     * @param int|stdClass|section_info $section
+     * @return bool
+     */
+    public function can_delete_section($section) {
+        return true;
+    }
+
+    /**
+     * Callback used in WS core_course_edit_section when teacher performs an AJAX action on a section (show/hide).
+     *
+     * @param section_info|stdClass $section
+     * @param string $action
+     * @param int $sr
+     * @return null|array any data for the Javascript post-processor (must be json-encodeable)
+     */
+    public function section_action($section, $action, $sr) {
+        global $PAGE;
+
+        if ($action === 'deleteSection') {
+            // Format 'topics' allows to set and remove markers in addition to common section actions.
+            require_capability('moodle/course:setcurrentsection', context_course::instance($this->courseid));
+            $rv = parent::delete_section($section);
+        } else {
+            $rv = parent::section_action($section, $action, $sr);
+        }
+        return $rv;
+    }
+
 }
diff --git a/templates/section.mustache b/templates/section.mustache
index 3486b16..8feddcf 100644
--- a/templates/section.mustache
+++ b/templates/section.mustache
@@ -89,7 +89,11 @@
 <div class="coursecontentmasonry content show">
      <div class="{{#hasavailability}}description small{{/hasavailability}}">
         {{#summary}}
-            {{> core_courseformat/local/content/section/summary }}
+            {{#summarytext}}
+                <div class="course-description-item summarytext m-1">
+                    <div class="description-inner">{{{summarytext}}}</div>
+                </div>
+            {{/summarytext}}
         {{/summary}}
         {{#availability}}
             {{> core_courseformat/local/content/section/availability }}