User blog comment:Coconutrules/Mysteries of the LEGO Message Boards Forum/@comment-4052371-20111209023146

Mystery : why do span styles show up in Preview post? If you preview code like text, then it shows up as red text in the Preview post, but does not show up when you actually post it.

But previewing JS scripts does not cause the script to execute. Why are tags like SPAN and DIV allowed, but not tags like SCRIPT, even though SPAN and DIV tags do not show up in posts?