diff --git a/OpenDayPreparationGuide.md b/OpenDayPreparationGuide.md
index 3b18ae9..38ce1f5 100644
--- a/OpenDayPreparationGuide.md
+++ b/OpenDayPreparationGuide.md
@@ -24,4 +24,5 @@ Publication start | Set to one week before the event
 Publication end | Set to the day after the end
 Other options | Leave as default
 
-
+Take care when creating the entry to use P and STRONG tags. Make sure the content is edited in a plain text editor when preparing it, and do not paste any rich text into the content box.
+![image](https://user-images.githubusercontent.com/178003/174340381-e13ec1b7-590a-4490-81c0-b66836ff7349.png)