question/bank/previewquestion/templates/preview_question.mustache CiBoT errors

diff --git a/question/bank/previewquestion/templates/preview_question.mustache b/question/bank/previewquestion/templates/preview_question.mustache
index c5c95f78cc4..86b075a91d5 100644
--- a/question/bank/previewquestion/templates/preview_question.mustache
+++ b/question/bank/previewquestion/templates/preview_question.mustache
@@ -22,6 +22,10 @@
     * session - Moodle session
     * slot - The identifying number of the first question that was added to this usage
     * question - The html of the actual question from the engine
+    * questionicon - TODO: add definition
+    * questiontitle - TODO: add definition
+    * versiontitle - TODO: add definition
+    * questionidumber - TODO: add definition
     * restartdisabled - The attributes to enable or disable the button, same for finishdisabled and filldisabled
     * techinfo - Technical information like fraction, state, behaviour etc
     * exporttoxml - Link to export the question to xml
@@ -31,22 +35,22 @@

     Example context (json):
     {
-        "previewdata": [
-          {
-                "actionurl": "/",
-                "session": "E2PwCfrnzz",
-                "slot": "1",
-                "question": "<div>question html</div>",
-                "restartdisabled": "disabled='disabled'",
-                "finishdisabled": "disabled='disabled'",
-                "filldisabled": "disabled='disabled'",
-                "techinfo": "<div>Behaviour being used: Deferred feedback</div>",
-                "redirecturl": "/",
-                "exporttoxml": "Download this question in Moodle XML format",
-                "comments": "html from comments api",
-                "extrapreviewelements": "<div>callback to get html from plugins need to show info in preview</div>"
-          }
-        ]
+        "actionurl": "/",
+        "session": "E2PwCfrnzz",
+        "slot": "1",
+        "question": "<div>question html</div>",
+        "questionicon": "<i class='icon fa fa-search-plus fa-fw' title='Preview question' aria-label='Preview question'></i>",
+        "questiontitle": "Question title",
+        "versiontitle": "Version 3 (latest)",
+        "questionidumber": "qidnumber1",
+        "restartdisabled": "disabled='disabled'",
+        "finishdisabled": "disabled='disabled'",
+        "filldisabled": "disabled='disabled'",
+        "techinfo": "<div>Behaviour being used: Deferred feedback</div>",
+        "redirecturl": "/",
+        "exporttoxml": "Download this question in Moodle XML format",
+        "comments": "html from comments api",
+        "extrapreviewelements": "<div>callback to get html from plugins need to show info in preview</div>"
     }
 }}
 <form id="responseform" method="post" action="{{{actionurl}}}" enctype="multipart/form-data" autocomplete="off">