This is the preamble because it comes before the first headline. This becomes a TL’DR.

This is regular preamble text that normally stops at the first headline. But one might not want to have that very first headline, so we also have the option to hide that headline and still be able to limit the preamble. This text is right before the hide attribute.

This article has a preamble and that is automatically the text before the first headline but after any featured image.