Storybooks are short stories within a text that have panels. They are intended to be cut out and put together into a small story for young readers...they usually cover 2-6 print pages and are on the front and back side of the page...the panels are numbered to show in which order they are read. If you ever have one in a book, you will know immediately what it is. Anything else is "narrative" text.
Use braille pages for things that have no print pages - in our example, it would be listed as "braille page p_".