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Page content is organized using a hierarchical heading structure

Titles and subtitles allow for a clear and yesterday’s organization of the content of each page of the book.

Objectives

  • Facilitate reader comprehension and navigation by presenting structured and logical content

Implementation

  • Use HTML tags h1, h2, h3, h4, h5 and h6
  • Each page must have at least one h1
  • Maintaining a hierarchy of : a title of level h2 should not be followed by a title of level h4.

Control

  • Check the HTML source code of the EPUB file:
    • Check that headings are defined using tags h1 through h6.
    • Check that at least one h1 tag is present.
    • Check that the heading levels follow a logical, hierarchical order without skipping levels.

    Validation

    • Reported by Ace by DAISY.
    • Needs to be verified by a human.

    Information