J.5.2 Using Explicit Structure When Possible

When authoring long or complex documents, structure can substantially improve the consumption experience for all readers. This is particularly true for those readers who make use of our accessibility features. For these readers, it is highly recommended that customers make use of many of the built-in document structure primitives found in Office Open XML.

Examples of such primitives include page and section breaks, lists, headings, headers and footers and even frames.