Section Headings
Section headings are used to organize the content.
In plain language
When a page is organized into distinct sections, each section should have its own heading.
Why it matters
Headings let people scan and jump directly to the part they care about, especially screen reader users who often navigate heading-by-heading. Without them, a long page becomes one undivided wall of content that's slow and hard to navigate.
In practice
Fails this criterion
A long article covering multiple topics (causes, effects, solutions) has no headings anywhere — it's one continuous block of text.
Meets this criterion
The same article has clear headings like "Causes," "Effects," and "Solutions," letting anyone jump straight to the section they want.
Test it yourself
Look at a long page's content. Does it have headings dividing it into logical sections? If it's one undivided block covering multiple topics, this criterion is failing.