The masoretic text has some nuances; such as the inverted nun. There are many such nuances in a Hebrew scroll. Some of them are even traditions. The inverted nuns were one of the first ones I discovered. Through the centuries teachings have developed about these nuances. Too see two such traditions take a look at the video and additional article.
There is one other place with inverted nuns – Psalms 107 See image below. Can you spot them?
For additional ideas about the inverted nun read this article.