Checkpoints - Large blocks of content should be broken up using subheadings
Large blocks of content can make the page difficult to read. Subheadings break up the page content for visual users, making articles easier to skim and also improve the experience with screen readers. Descriptive subheadings (HTML heading elements) can also help with SEO. See WCAG 2, 2.4.10.
Using descriptive subheadings (HTML header tags) can also help with SEO. See WCAG 2.0 2.4.10.
Content Presentation, Accessibility.
This checkpoint flags a page if the paragraph element (<p>) is used 6 times or more consecutively.