Are rows also content elements?

No. Rows are treated as if they were content, but they are still rows and columns. So only "containers" in which you can insert content.

 

We have simplified the operation, so that you can now simply drag rows like content onto a page. The basic function, however, has remained identical. While other systems have a content element columns that you create like a content and where you can then also insert content, the structure of page4 remains separate from the content.