In this section, you can choose to import either the body page flow or the reference page flow.
Import the selected flow from the body page of the document.
By default, the body pages contain one flow: A (Main Flow). If a document contains multiple flows, you need to choose the flow to import.
Similar to the body page import, you can choose the flow in the references page to import. By default, the reference pages contain the following flows:
TOC
IX
HTML
Heading
You can also add a user-defined flow to the reference document. You can then add this reference page flow as a text inset to your document.